aboutsummaryrefslogtreecommitdiff
path: root/include/net
AgeCommit message (Collapse)Author
2006-12-17[AX.25]: Mark all kmalloc users __must_checkRalf Baechle
The recent fix 0506d4068bad834aab1141b5dc5e748eb175c6b3 made obvious that error values were not being propagated through the AX.25 stack. To help with that this patch marks all kmalloc users in the AX.25, NETROM and ROSE stacks as __must_check. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-13[IPV6]: Make fib6_node subtree depend on IPV6_SUBTREESKim Nordlund
Make fib6_node 'subtree' depend on IPV6_SUBTREES. Signed-off-by: Kim Nordlund <kim.nordlund@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-13[SCTP]: Add support for SCTP_CONTEXT socket option.Ivan Skytte Jorgensen
Signed-off-by: Ivan Skytte Jorgensen <isj-sctp@i1.dk> Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-13[SCTP]: Handle address add/delete events in a more efficient way.Sridhar Samudrala
Currently in SCTP, we maintain a local address list by rebuilding the whole list from the device list whenever we get a address add/delete event. This patch fixes it by only adding/deleting the address for which we receive the event. Also removed the sctp_local_addr_lock() which is no longer needed as we now use list_for_each_safe() to traverse this list. This fixes the bugs in sctp_copy_laddrs_xxx() routines where we do copy_to_user() while holding this lock. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-13[NETFILTER]: x_tables: error if ip_conntrack is asked to handle IPv6 packetsYasuyuki Kozakai
To do that, this makes nf_ct_l3proto_try_module_{get,put} compatible functions. As a result we can remove '#ifdef' surrounds and direct call of need_conntrack(). Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-13[PATCH] hci endianness annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-11[HAMRADIO]: Fix baycom_epp.c compile failure.Ralf Baechle
Fix foobar in 15b1c0e822f578306332d4f4c449250db5c5dceb and e8cc49bb0fdb9e18a99e6780073d1400ba2b0d1f patch series. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-10[PATCH] sysctl: remove unused "context" paramAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Andi Kleen <ak@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: David Howells <dhowells@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08[AX.25]: Fix default address and broadcast address initialization.Ralf Baechle
Only the callsign but not the SSID part of an AX.25 address is ASCII based but Linux by initializes the SSID which should be just a 4-bit number from ASCII anyway. Fix that and convert the code to use a shared constant for both default addresses. While at it, use the same style for null_ax25_address also. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-08[AX.25]: Constify ax25 utility functionsRalf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-08[NET]: Convert hh_lock to seqlock.Stephen Hemminger
The hard header cache is in the main output path, so using seqlock instead of reader/writer lock should reduce overhead. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-08[PATCH] tty: switch to ktermios and new frameworkAlan Cox
This is the core of the switch to the new framework. I've split it from the driver patches which are mostly search/replace and would encourage people to give this one a good hard stare. The references to BOTHER and ISHIFT are the termios values that must be defined by a platform once it wants to turn on "new style" ioctl support. The code patches here ensure that providing 1. The termios overlays the ktermios in memory 2. The only new kernel only fields are c_ispeed/c_ospeed (or none) the existing behaviour is retained. This is true for the patches at this point in time. Future patches will define BOTHER, ISHIFT and enable newer termios structures for each architecture, and once they are all done some of the ifdefs also vanish. [akpm@osdl.org: warning fix] [akpm@osdl.org: IRDA fix] Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (48 commits) [NETFILTER]: Fix non-ANSI func. decl. [TG3]: Identify Serdes devices more clearly. [TG3]: Use msleep. [TG3]: Use netif_msg_*. [TG3]: Allow partial speed advertisement. [TG3]: Add TG3_FLG2_IS_NIC flag. [TG3]: Add 5787F device ID. [TG3]: Fix Phy loopback. [WANROUTER]: Kill kmalloc debugging code. [TCP] inet_twdr_hangman: Delete unnecessary memory barrier(). [NET]: Memory barrier cleanups [IPSEC]: Fix inetpeer leak in ipv4 xfrm dst entries. audit: disable ipsec auditing when CONFIG_AUDITSYSCALL=n audit: Add auditing to ipsec [IRDA] irlan: Fix compile warning when CONFIG_PROC_FS=n [IrDA]: Incorrect TTP header reservation [IrDA]: PXA FIR code device model conversion [GENETLINK]: Fix misplaced command flags. [NETLIK]: Add a pointer to the Generic Netlink wiki page. [IPV6] RAW: Don't release unlocked sock. ...
2006-12-07[PATCH] lockdep: annotate nfs/nfsd in-kernel socketsPeter Zijlstra
Stick NFS sockets in their own class to avoid some lockdep warnings. NFS sockets are never exposed to user-space, and will hence not trigger certain code paths that would otherwise pose deadlock scenarios. [akpm@osdl.org: cleanups] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Steven Dickson <SteveD@redhat.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Acked-by: Neil Brown <neilb@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> [ Fixed patch corruption by quilt, pointed out by Peter Zijlstra ] Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] slab: remove kmem_cache_tChristoph Lameter
Replace all uses of kmem_cache_t with struct kmem_cache. The patch was generated using the following script: #!/bin/sh # # Replace one string by another in all the kernel sources. # set -e for file in `find * -name "*.c" -o -name "*.h"|xargs grep -l $1`; do quilt add $file sed -e "1,\$s/$1/$2/g" $file >/tmp/$$ mv /tmp/$$ $file quilt refresh done The script was run like this sh replace kmem_cache_t "struct kmem_cache" Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] slab: remove SLAB_ATOMICChristoph Lameter
SLAB_ATOMIC is an alias of GFP_ATOMIC Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06audit: disable ipsec auditing when CONFIG_AUDITSYSCALL=nJoy Latten
Disables auditing in ipsec when CONFIG_AUDITSYSCALL is disabled in the kernel. Also includes a bug fix for xfrm_state.c as a result of original ipsec audit patch. Signed-off-by: Joy Latten <latten@austin.ibm.com> Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-06audit: Add auditing to ipsecJoy Latten
An audit message occurs when an ipsec SA or ipsec policy is created/deleted. Signed-off-by: Joy Latten <latten@austin.ibm.com> Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-06[IRDA] irlan: Fix compile warning when CONFIG_PROC_FS=nRandy Dunlap
include/net/irda/irlan_filter.h:31: warning: 'struct seq_file' declared inside parameter list include/net/irda/irlan_filter.h:31: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-05Merge branch 'master' of ↵David Howells
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/ata/libata-scsi.c include/linux/libata.h Futher merge of Linus's head and compilation fixups. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-12-05Merge branch 'master' of ↵David Howells
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/infiniband/core/iwcm.c drivers/net/chelsio/cxgb2.c drivers/net/wireless/bcm43xx/bcm43xx_main.c drivers/net/wireless/prism54/islpci_eth.c drivers/usb/core/hub.h drivers/usb/input/hid-core.c net/core/netpoll.c Fix up merge failures with Linus's head and fix new compilation failures. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-12-04[PATCH] severing skbuff.h -> mm.hAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-12-04[PATCH] severing skbuff.h -> poll.hAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-12-02[NETFILTER]: nf_conntrack/nf_nat: add PPTP helper portPatrick McHardy
Add nf_conntrack port of the PPtP conntrack/NAT helper. Since there seems to be no IPv6-capable PPtP implementation the helper only support IPv4. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NETFILTER]: nf_conntrack/nf_nat: add H.323 helper portPatrick McHardy
Add IPv4 and IPv6 capable nf_conntrack port of the H.323 conntrack/NAT helper. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NETFILTER]: nf_conntrack: add helper function for expectation initializationPatrick McHardy
Expectation address masks need to be differently initialized depending on the address family, create helper function to avoid cluttering up the code too much. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NETFILTER]: nf_nat: add FTP NAT helper portJozsef Kadlecsik
Add FTP NAT helper. Split out from Jozsef's big nf_nat patch with a few small fixes by myself. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NETFILTER]: Add NAT support for nf_conntrackJozsef Kadlecsik
Add NAT support for nf_conntrack. Joint work of Jozsef Kadlecsik, Yasuyuki Kozakai, Martin Josefsson and myself. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NETFILTER]: nf_conntrack: automatic helper assignment for expectationsPatrick McHardy
Some helpers (namely H.323) manually assign further helpers to expected connections. This is not possible with nf_conntrack anymore since we need to know whether a helper is used at allocation time. Handle the helper assignment centrally, which allows to perform the correct allocation and as a nice side effect eliminates the need for the H.323 helper to fiddle with nf_conntrack_lock. Mid term the allocation scheme really needs to be redesigned since we do both the helper and expectation lookup _twice_ for every new connection. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NETFILTER]: nf_conntrack: endian annotationsPatrick McHardy
Resync with Al Viro's ip_conntrack annotations and fix a missed spot in ip_nat_proto_icmp.c. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NETFILTER]: nf_conntrack: fix helper structure alignmentPatrick McHardy
Adding the alignment to the size doesn't make any sense, what it should do is align the size of the conntrack structure to the alignment requirements of the helper structure and return an aligned pointer in nfct_help(). Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[GENETLINK]: Add cmd dump completion.Jamal Hadi Salim
Remove assumption that generic netlink commands cannot have dump completion callbacks. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPSEC]: Add encapsulation family.Miika Komu
Signed-off-by: Miika Komu <miika@iki.fi> Signed-off-by: Diego Beltrami <Diego.Beltrami@hiit.fi> Signed-off-by: Kazunori Miyazawa <miyazawa@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NET_SCHED]: Fix endless loops caused by inaccurate qlen counters (part 1)Patrick McHardy
There are multiple problems related to qlen adjustment that can lead to an upper qdisc getting out of sync with the real number of packets queued, leading to endless dequeueing attempts by the upper layer code. All qdiscs must maintain an accurate q.qlen counter. There are basically two groups of operations affecting the qlen: operations that propagate down the tree (enqueue, dequeue, requeue, drop, reset) beginning at the root qdisc and operations only affecting a subtree or single qdisc (change, graft, delete class). Since qlen changes during operations from the second group don't propagate to ancestor qdiscs, their qlen values become desynchronized. This patch adds a function to propagate qlen changes up the qdisc tree, optionally calling a callback function to perform qdisc-internal maintenance when the child qdisc becomes empty. The follow-up patches will convert all qdiscs to use this function where necessary. Noticed by Timo Steinbach <tsteinbach@astaro.com>. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NET_SCHED]: Set parent classid in default qdiscsPatrick McHardy
Set parent classids in default qdiscs to allow walking up the tree from outside the qdiscs. This is needed by the next patch. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02NetLabel: convert to an extensibile/sparse category bitmapPaul Moore
The original NetLabel category bitmap was a straight char bitmap which worked fine for the initial release as it only supported 240 bits due to limitations in the CIPSO restricted bitmap tag (tag type 0x01). This patch converts that straight char bitmap into an extensibile/sparse bitmap in order to lay the foundation for other CIPSO tag types and protocols. This patch also has a nice side effect in that all of the security attributes passed by NetLabel into the LSM are now in a format which is in the host's native byte/bit ordering which makes the LSM specific code much simpler; look at the changes in security/selinux/ss/ebitmap.c as an example. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
2006-12-02[NETFILTER]: conntrack: add '_get' to {ip, nf}_conntrack_expect_findYasuyuki Kozakai
We usually uses 'xxx_find_get' for function which increments reference count. Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[NETFILTER]: nf_conntrack: /proc compatibility with old connection trackingPatrick McHardy
This patch adds /proc/net/ip_conntrack, /proc/net/ip_conntrack_expect and /proc/net/stat/ip_conntrack files to keep old programs using them working. The /proc/net/ip_conntrack and /proc/net/ip_conntrack_expect files show only IPv4 entries, the /proc/net/stat/ip_conntrack shows global statistics. Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[NETFILTER]: nf_conntrack: sysctl compatibility with old connection trackingPatrick McHardy
This patch adds an option to keep the connection tracking sysctls visible under their old names. Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[NETFILTER]: nf_conntrack: automatic sysctl registation for conntrack protocolsPatrick McHardy
Add helper functions for sysctl registration with optional instantiating of common path elements (like net/netfilter) and use it for support for automatic registation of conntrack protocol sysctls. Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[NETFILTER]: nf_conntrack: move extern declaration to header filesPatrick McHardy
Using extern in a C file is a bad idea because the compiler can't catch type errors. Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[NETFILTER]: nf_conntrack: remove unused struct list_head from protocolsMartin Josefsson
Remove unused struct list_head from struct nf_conntrack_l3proto and nf_conntrack_l4proto as all protocols are kept in arrays, not linked lists. Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se> Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[NETFILTER]: nf_conntrack: more sanity checks in protocol ↵Martin Josefsson
registration/unregistration Add some more sanity checks when registering/unregistering l3/l4 protocols. Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se> Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[NETFILTER]: nf_conntrack: rename struct nf_conntrack_protocolMartin Josefsson
Rename 'struct nf_conntrack_protocol' to 'struct nf_conntrack_l4proto' in order to help distinguish it from 'struct nf_conntrack_l3proto'. It gets rather confusing with 'nf_conntrack_protocol'. Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se> Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[NETFILTER]: nf_conntrack: split out the event cacheMartin Josefsson
This patch splits out the event cache into its own file nf_conntrack_ecache.c Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se> Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[NETFILTER]: nf_conntrack: split out helper handlingMartin Josefsson
This patch splits out handling of helpers into its own file nf_conntrack_helper.c Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se> Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[NETFILTER]: nf_conntrack: split out expectation handlingMartin Josefsson
This patch splits out expectation handling into its own file nf_conntrack_expect.c Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se> Signed-off-by: Patrick McHardy <kaber@trash.net>
2006-12-02[INET]: Change protocol field in struct inet_protosw to u16Arnaldo Carvalho de Melo
[acme@newtoy net-2.6.20]$ pahole /tmp/tcp_ipv6.o inet_protosw /* /pub/scm/linux/kernel/git/acme/net-2.6.20/include/net/protocol.h:69 */ struct inet_protosw { struct list_head list; /* 0 8 */ short unsigned int type; /* 8 2 */ /* XXX 2 bytes hole, try to pack */ int protocol; /* 12 4 */ struct proto * prot; /* 16 4 */ const struct proto_ops * ops; /* 20 4 */ int capability; /* 24 4 */ char no_check; /* 28 1 */ unsigned char flags; /* 29 1 */ }; /* size: 32, sum members: 28, holes: 1, sum holes: 2, padding: 2 */ So that we can kill that hole, protocol can only go all the way to 255 (RAW). Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2006-12-02[XFRM]: Pack struct xfrm_policyArnaldo Carvalho de Melo
[acme@newtoy net-2.6.20]$ pahole net/ipv4/tcp.o xfrm_policy /* /pub/scm/linux/kernel/git/acme/net-2.6.20/include/linux/security.h:67 */ struct xfrm_policy { struct xfrm_policy * next; /* 0 4 */ struct hlist_node bydst; /* 4 8 */ struct hlist_node byidx; /* 12 8 */ rwlock_t lock; /* 20 36 */ atomic_t refcnt; /* 56 4 */ struct timer_list timer; /* 60 24 */ u8 type; /* 84 1 */ /* XXX 3 bytes hole, try to pack */ u32 priority; /* 88 4 */ u32 index; /* 92 4 */ struct xfrm_selector selector; /* 96 56 */ struct xfrm_lifetime_cfg lft; /* 152 64 */ struct xfrm_lifetime_cur curlft; /* 216 32 */ struct dst_entry * bundles; /* 248 4 */ __u16 family; /* 252 2 */ __u8 action; /* 254 1 */ __u8 flags; /* 255 1 */ __u8 dead; /* 256 1 */ __u8 xfrm_nr; /* 257 1 */ /* XXX 2 bytes hole, try to pack */ struct xfrm_sec_ctx * security; /* 260 4 */ struct xfrm_tmpl xfrm_vec[6]; /* 264 360 */ }; /* size: 624, sum members: 619, holes: 2, sum holes: 5 */ So lets have just one hole instead of two, by moving 'type' to just before 'action', end result: [acme@newtoy net-2.6.20]$ codiff -s /tmp/tcp.o.before net/ipv4/tcp.o /pub/scm/linux/kernel/git/acme/net-2.6.20/net/ipv4/tcp.c: struct xfrm_policy | -4 1 struct changed [acme@newtoy net-2.6.20]$ [acme@newtoy net-2.6.20]$ pahole -c 64 net/ipv4/tcp.o xfrm_policy /* /pub/scm/linux/kernel/git/acme/net-2.6.20/include/linux/security.h:67 */ struct xfrm_policy { struct xfrm_policy * next; /* 0 4 */ struct hlist_node bydst; /* 4 8 */ struct hlist_node byidx; /* 12 8 */ rwlock_t lock; /* 20 36 */ atomic_t refcnt; /* 56 4 */ struct timer_list timer; /* 60 24 */ u32 priority; /* 84 4 */ u32 index; /* 88 4 */ struct xfrm_selector selector; /* 92 56 */ struct xfrm_lifetime_cfg lft; /* 148 64 */ struct xfrm_lifetime_cur curlft; /* 212 32 */ struct dst_entry * bundles; /* 244 4 */ u16 family; /* 248 2 */ u8 type; /* 250 1 */ u8 action; /* 251 1 */ u8 flags; /* 252 1 */ u8 dead; /* 253 1 */ u8 xfrm_nr; /* 254 1 */ /* XXX 1 byte hole, try to pack */ struct xfrm_sec_ctx * security; /* 256 4 */ struct xfrm_tmpl xfrm_vec[6]; /* 260 360 */ }; /* size: 620, sum members: 619, holes: 1, sum holes: 1 */ Are there any fugly data dependencies here? None that I know. In the process changed the removed the __ prefixed types, that are just for userspace visible headers. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2006-12-02[INET_CONNECTION_SOCK]: Pack struct inet_connection_sock_af_opsArnaldo Carvalho de Melo
We have a hole in: [acme@newtoy net-2.6.20]$ pahole net/ipv6/tcp_ipv6.o inet_connection_sock_af_ops /* /pub/scm/linux/kernel/git/acme/net-2.6.20/include/net/inet_connection_sock.h:38 */ struct inet_connection_sock_af_ops { int (*queue_xmit)(); /* 0 4 */ void (*send_check)(); /* 4 4 */ int (*rebuild_header)(); /* 8 4 */ int (*conn_request)(); /* 12 4 */ struct sock * (*syn_recv_sock)(); /* 16 4 */ int (*remember_stamp)(); /* 20 4 */ __u16 net_header_len; /* 24 2 */ /* XXX 2 bytes hole, try to pack */ int (*setsockopt)(); /* 28 4 */ int (*getsockopt)(); /* 32 4 */ int (*compat_setsockopt)(); /* 36 4 */ int (*compat_getsockopt)(); /* 40 4 */ void (*addr2sockaddr)(); /* 44 4 */ int sockaddr_len; /* 48 4 */ }; /* size: 52, sum members: 50, holes: 1, sum holes: 2 */ But we don't need sockaddr_len to be an int: [acme@newtoy net-2.6.20]$ find net -name "*.[ch]" | xargs grep '\.sockaddr_len.\+=' | sort -u net/dccp/ipv4.c: .sockaddr_len = sizeof(struct sockaddr_in), net/dccp/ipv6.c: .sockaddr_len = sizeof(struct sockaddr_in6), net/ipv4/tcp_ipv4.c: .sockaddr_len = sizeof(struct sockaddr_in), net/ipv6/tcp_ipv6.c: .sockaddr_len = sizeof(struct sockaddr_in6), net/sctp/ipv6.c: .sockaddr_len = sizeof(struct sockaddr_in6), net/sctp/protocol.c: .sockaddr_len = sizeof(struct sockaddr_in), [acme@newtoy net-2.6.20]$ pahole --sizes net/ipv6/tcp_ipv6.o | grep sockaddr_in struct sockaddr_in: 16 0 struct sockaddr_in6: 28 0 [acme@newtoy net-2.6.20]$ So I turned sockaddr_len a 'u16', and now: [acme@newtoy net-2.6.20]$ pahole net/ipv6/tcp_ipv6.o inet_connection_sock_af_ops /* /pub/scm/linux/kernel/git/acme/net-2.6.20/include/net/inet_connection_sock.h:38 */ struct inet_connection_sock_af_ops { int (*queue_xmit)(); /* 0 4 */ void (*send_check)(); /* 4 4 */ int (*rebuild_header)(); /* 8 4 */ int (*conn_request)(); /* 12 4 */ struct sock * (*syn_recv_sock)(); /* 16 4 */ int (*remember_stamp)(); /* 20 4 */ u16 net_header_len; /* 24 2 */ u16 sockaddr_len; /* 26 2 */ int (*setsockopt)(); /* 28 4 */ int (*getsockopt)(); /* 32 4 */ int (*compat_setsockopt)(); /* 36 4 */ int (*compat_getsockopt)(); /* 40 4 */ void (*addr2sockaddr)(); /* 44 4 */ }; /* size: 48 */ So we've saved 4 bytes: [acme@newtoy net-2.6.20]$ codiff -sV /tmp/tcp_ipv6.o.before net/ipv6/tcp_ipv6.o /pub/scm/linux/kernel/git/acme/net-2.6.20/net/ipv6/tcp_ipv6.c: struct inet_connection_sock_af_ops | -4 net_header_len; from: __u16 /* 24(0) 2(0) */ to: u16 /* 24(0) 2(0) */ sockaddr_len; from: int /* 48(0) 4(0) */ to: u16 /* 26(0) 2(0) */ 1 struct changed [acme@newtoy net-2.6.20]$ Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>