kernel/linux.git/net/caif/caif_dev.c, branch linux-5.9.y

net: caif: use true,false for bool variables

2020-04-23T02:37:48+00:00

Fix the following coccicheck warning: net/caif/caif_dev.c:410:2-13: WARNING: Assignment of 0/1 to bool variable net/caif/caif_dev.c:445:2-13: WARNING: Assignment of 0/1 to bool variable net/caif/caif_dev.c:145:1-12: WARNING: Assignment of 0/1 to bool variable net/caif/caif_dev.c:223:1-12: WARNING: Assignment of 0/1 to bool variable Signed-off-by: Jason Yan Signed-off-by: David S. Miller

net: caif: Add lockdep expression to RCU traversal primitive

2020-03-12T05:55:25+00:00

caifdevs->list is traversed using list_for_each_entry_rcu() outside an RCU read-side critical section but under the protection of rtnl_mutex. Hence, add the corresponding lockdep expression to silence the following false-positive warning: [ 10.868467] ============================= [ 10.869082] WARNING: suspicious RCU usage [ 10.869817] 5.6.0-rc1-00177-g06ec0a154aae4 #1 Not tainted [ 10.870804] ----------------------------- [ 10.871557] net/caif/caif_dev.c:115 RCU-list traversed in non-reader section!! Reported-by: kernel test robot Signed-off-by: Amol Grover Signed-off-by: David S. Miller

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194

2019-05-30T18:29:22+00:00

Based on 1 normalized pattern(s): license terms gnu general public license gpl version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 161 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Alexios Zavras Reviewed-by: Steve Winslow Reviewed-by: Richard Fontana Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170027.447718015@linutronix.de Signed-off-by: Greg Kroah-Hartman

net: caif: avoid using qdisc_qlen()

2019-04-10T19:20:46+00:00

Such helper does not cope correctly with NOLOCK qdiscs. In the following patches we will move back qlen to per CPU values for such qdiscs, so qdisc_qlen_sum() is not an option, too. Instead, use qlen only for lock qdiscs, and always set flow off for NOLOCK qdiscs with a not empty tx queue. Signed-off-by: Paolo Abeni Signed-off-by: David S. Miller

net: caif: Add a missing rcu_read_unlock() in caif_flow_cb

2018-07-21T23:14:39+00:00

Add a missing rcu_read_unlock in the error path Fixes: c95567c80352 ("caif: added check for potential null return") Signed-off-by: YueHaibing Signed-off-by: David S. Miller

net: caif: use strlcpy() instead of strncpy()

2018-01-09T16:52:18+00:00

gcc-8 reports net/caif/caif_dev.c: In function 'caif_enroll_dev': ./include/linux/string.h:245:9: warning: '__builtin_strncpy' output may be truncated copying 15 bytes from a string of length 15 [-Wstringop-truncation] net/caif/cfctrl.c: In function 'cfctrl_linkup_request': ./include/linux/string.h:245:9: warning: '__builtin_strncpy' output may be truncated copying 15 bytes from a string of length 15 [-Wstringop-truncation] net/caif/cfcnfg.c: In function 'caif_connect_client': ./include/linux/string.h:245:9: warning: '__builtin_strncpy' output may be truncated copying 15 bytes from a string of length 15 [-Wstringop-truncation] The compiler require that the input param 'len' of strncpy() should be greater than the length of the src string, so that '\0' is copied as well. We can just use strlcpy() to avoid this warning. Signed-off-by: Xiongfeng Wang Signed-off-by: David S. Miller

netns: make struct pernet_operations::id unsigned int

2016-11-18T15:59:15+00:00

Make struct pernet_operations::id unsigned. There are 2 reasons to do so: 1) This field is really an index into an zero based array and thus is unsigned entity. Using negative value is out-of-bound access by definition. 2) On x86_64 unsigned 32-bit data which are mixed with pointers via array indexing or offsets added or subtracted to pointers are preffered to signed 32-bit data. "int" being used as an array index needs to be sign-extended to 64-bit before being used. void f(long *p, int i) { g(p[i]); } roughly translates to movsx rsi, esi mov rdi, [rsi+...] call g MOVSX is 3 byte instruction which isn't necessary if the variable is unsigned because x86_64 is zero extending by default. Now, there is net_generic() function which, you guessed it right, uses "int" as an array index: static inline void *net_generic(const struct net *net, int id) { ... ptr = ng->ptr[id - 1]; ... } And this function is used a lot, so those sign extensions add up. Patch snipes ~1730 bytes on allyesconfig kernel (without all junk messing with code generation): add/remove: 0/0 grow/shrink: 70/598 up/down: 396/-2126 (-1730) Unfortunately some functions actually grow bigger. This is a semmingly random artefact of code generation with register allocator being used differently. gcc decides that some variable needs to live in new r8+ registers and every access now requires REX prefix. Or it is shifted into r12, so [r12+0] addressing mode has to be used which is longer than [r8] However, overall balance is in negative direction: add/remove: 0/0 grow/shrink: 70/598 up/down: 396/-2126 (-1730) function old new delta nfsd4_lock 3886 3959 +73 tipc_link_build_proto_msg 1096 1140 +44 mac80211_hwsim_new_radio 2776 2808 +32 tipc_mon_rcv 1032 1058 +26 svcauth_gss_legacy_init 1413 1429 +16 tipc_bcbase_select_primary 379 392 +13 nfsd4_exchange_id 1247 1260 +13 nfsd4_setclientid_confirm 782 793 +11 ... put_client_renew_locked 494 480 -14 ip_set_sockfn_get 730 716 -14 geneve_sock_add 829 813 -16 nfsd4_sequence_done 721 703 -18 nlmclnt_lookup_host 708 686 -22 nfsd4_lockt 1085 1063 -22 nfs_get_client 1077 1050 -27 tcf_bpf_init 1106 1076 -30 nfsd4_encode_fattr 5997 5930 -67 Total: Before=154856051, After=154854321, chg -0.00% Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller

net: caif: convert to using IFF_NO_QUEUE

2015-08-18T18:55:07+00:00

Signed-off-by: Phil Sutter Cc: Dmitry Tarnyagin Signed-off-by: David S. Miller

net: Include appropriate header file in caif/caif_dev.c

2014-02-10T01:32:49+00:00

Include appropriate header file net/caif/caif_dev.h in caif/caif_dev.c because it has prototype declarations of function defined in caif/caif_dev.c. This eliminates the following file in caif/caif_dev.c: net/caif/caif_dev.c:303:6: warning: no previous prototype for ‘caif_enroll_dev’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria Reviewed-by: Josh Triplett Signed-off-by: David S. Miller

net: pass info struct via netdevice notifier

2013-05-28T20:11:01+00:00

So far, only net_device * could be passed along with netdevice notifier event. This patch provides a possibility to pass custom structure able to provide info that event listener needs to know. Signed-off-by: Jiri Pirko v2->v3: fix typo on simeth shortened dev_getter shortened notifier_info struct name v1->v2: fix notifier_call parameter in call_netdevice_notifier() Signed-off-by: David S. Miller