From: Daniel Borkmann Date: Mon, 28 May 2018 15:43:17 +0000 (+0200) Subject: Merge branch 'bpf-sendmsg-hook' X-Git-Tag: v5.15~8692^2~9^2~20 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f198222f056745b2622c89190a13c5a485011014;p=platform%2Fkernel%2Flinux-starfive.git Merge branch 'bpf-sendmsg-hook' Andrey Ignatov says: ==================== v3 -> v4: * handle static key correctly for CONFIG_CGROUP_BPF=n. v2 -> v3: * place BPF logic under static key in udp_sendmsg, udpv6_sendmsg; * rebase. v1 -> v2: * return ENOTSUPP if bpf_prog rewrote IPv6-only with IPv4-mapped IPv6; * add test for IPv4-mapped IPv6 use-case; * fix build for CONFIG_CGROUP_BPF=n; * rebase. This path set adds BPF hooks for sys_sendmsg similar to existing hooks for sys_bind and sys_connect. Hooks allow to override source IP (including the case when it's set via cmsg(3)) and destination IP:port for unconnected UDP (slow path). TCP and connected UDP (fast path) are not affected. This makes UDP support complete: connected UDP is handled by sys_connect hooks, unconnected by sys_sendmsg ones. Similar to sys_connect hooks, sys_sendmsg ones can be used to make system calls such as sendmsg(2) and sendto(2) return EPERM. Please see patch 0002 for more details. ==================== Signed-off-by: Daniel Borkmann --- f198222f056745b2622c89190a13c5a485011014