A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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BACKPORT: net: add sock_bindtoindex

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Add a helper to directly set the SO_BINDTOIFINDEX sockopt from kernel
space without going through a fake uaccess.

Change-Id: I6cf5767101ed908276085f7f54c0b1dc1437b6a3
Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Christoph Hellwig 2020-05-28 07:12:13 +02:00 • committed by basamaryan
commit c1aa7dc417
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GPG key ID: 210D5384FB2A5885
4 changed files with 19 additions and 12 deletions
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4
net/ipv4/udp_tunnel.c
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@ -22,9 +22,7 @@ int udp_sock_create4(struct net *net, struct udp_port_cfg *cfg,
goto error;
if (cfg->bind_ifindex) {
err = kernel_setsockopt(sock, SOL_SOCKET, SO_BINDTOIFINDEX,
(void *)&cfg->bind_ifindex,
sizeof(cfg->bind_ifindex));
err = sock_bindtoindex(sock->sk, cfg->bind_ifindex);
if (err < 0)
goto error;
}