diff options
| author | Kuniyuki Iwashima <kuniyu@google.com> | 2026-03-11 08:19:55 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-14 04:57:45 +0300 |
| commit | b2a1d719be4f8e9d970038ecd4db983f6e42d377 (patch) | |
| tree | 2215358a1e83da4a55241a1d416953a1f573d06d /include | |
| parent | c2539d4f2df7a9889b71bad97b97ddfd9e47add1 (diff) | |
| download | linux-b2a1d719be4f8e9d970038ecd4db983f6e42d377.tar.xz | |
udp: Remove partial csum code in TX.
UDP TX paths also have some code for UDP-Lite partial
checksum:
* udplite_csum() in udp_send_skb() and udp_v6_send_skb()
* udplite_getfrag() in udp_sendmsg() and udpv6_sendmsg()
Let's remove such code.
Now, we can use IPPROTO_UDP directly instead of sk->sk_protocol
or fl6->flowi6_proto for csum_tcpudp_magic() and csum_ipv6_magic().
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260311052020.1213705-9-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/udplite.h | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/include/net/udplite.h b/include/net/udplite.h index 0456a14c993b..6bfa1d6833d1 100644 --- a/include/net/udplite.h +++ b/include/net/udplite.h @@ -12,39 +12,4 @@ #define UDPLITE_SEND_CSCOV 10 /* sender partial coverage (as sent) */ #define UDPLITE_RECV_CSCOV 11 /* receiver partial coverage (threshold ) */ -/* - * Checksum computation is all in software, hence simpler getfrag. - */ -static __inline__ int udplite_getfrag(void *from, char *to, int offset, - int len, int odd, struct sk_buff *skb) -{ - struct msghdr *msg = from; - return copy_from_iter_full(to, len, &msg->msg_iter) ? 0 : -EFAULT; -} - -/* - * Checksumming routines - */ - -/* Fast-path computation of checksum. Socket may not be locked. */ -static inline __wsum udplite_csum(struct sk_buff *skb) -{ - const int off = skb_transport_offset(skb); - const struct sock *sk = skb->sk; - int len = skb->len - off; - - if (udp_test_bit(UDPLITE_SEND_CC, sk)) { - u16 pcslen = READ_ONCE(udp_sk(sk)->pcslen); - - if (pcslen < len) { - if (pcslen > 0) - len = pcslen; - udp_hdr(skb)->len = htons(pcslen); - } - } - skb->ip_summed = CHECKSUM_NONE; /* no HW support for checksumming */ - - return skb_checksum(skb, off, len, 0); -} - #endif /* _UDPLITE_H */ |