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udp: expand SKB_DROP_REASON_UDP_CSUM use

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SKB_DROP_REASON_UDP_CSUM can be used in four locations
when dropping a packet because of a wrong UDP checksum.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250307102002.2095238-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2025-03-07 10:20:02 +00:00 committed by Jakub Kicinski
parent 248f6571fd
commit b3aaf3c13b
2 changed files with 4 additions and 4 deletions
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6
net/ipv4/udp.c
View File

@ -1848,7 +1848,7 @@ static struct sk_buff *__first_packet_length(struct sock *sk,
atomic_inc(&sk->sk_drops);
__skb_unlink(skb, rcvq);
*total += skb->truesize;
kfree_skb(skb);
kfree_skb_reason(skb, SKB_DROP_REASON_UDP_CSUM);
} else {
udp_skb_csum_unnecessary_set(skb);
break;
@ -2002,7 +2002,7 @@ int udp_read_skb(struct sock *sk, skb_read_actor_t recv_actor)
__UDP_INC_STATS(net, UDP_MIB_CSUMERRORS, is_udplite);
__UDP_INC_STATS(net, UDP_MIB_INERRORS, is_udplite);
atomic_inc(&sk->sk_drops);
kfree_skb(skb);
kfree_skb_reason(skb, SKB_DROP_REASON_UDP_CSUM);
goto try_again;
}
@ -2117,7 +2117,7 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int flags,
UDP_INC_STATS(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);
UDP_INC_STATS(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
}
kfree_skb(skb);
kfree_skb_reason(skb, SKB_DROP_REASON_UDP_CSUM);
/* starting over for a new packet, but check if we need to yield */
cond_resched();

2
net/ipv6/udp.c
View File

@ -586,7 +586,7 @@ int udpv6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
SNMP_INC_STATS(mib, UDP_MIB_CSUMERRORS);
SNMP_INC_STATS(mib, UDP_MIB_INERRORS);
}
kfree_skb(skb);
kfree_skb_reason(skb, SKB_DROP_REASON_UDP_CSUM);
/* starting over for a new packet, but check if we need to yield */
cond_resched();