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-rw-r--r--include/net/udplite.h88
1 files changed, 0 insertions, 88 deletions
diff --git a/include/net/udplite.h b/include/net/udplite.h
deleted file mode 100644
index 786919d29f8d..000000000000
--- a/include/net/udplite.h
+++ /dev/null
@@ -1,88 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Definitions for the UDP-Lite (RFC 3828) code.
- */
-#ifndef _UDPLITE_H
-#define _UDPLITE_H
-
-#include <net/ip6_checksum.h>
-#include <net/udp.h>
-
-/* UDP-Lite socket options */
-#define UDPLITE_SEND_CSCOV 10 /* sender partial coverage (as sent) */
-#define UDPLITE_RECV_CSCOV 11 /* receiver partial coverage (threshold ) */
-
-extern struct proto udplite_prot;
-extern struct udp_table udplite_table;
-
-/*
- * 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
- */
-static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh)
-{
- u16 cscov;
-
- /* In UDPv4 a zero checksum means that the transmitter generated no
- * checksum. UDP-Lite (like IPv6) mandates checksums, hence packets
- * with a zero checksum field are illegal. */
- if (uh->check == 0) {
- net_dbg_ratelimited("UDPLite: zeroed checksum field\n");
- return 1;
- }
-
- cscov = ntohs(uh->len);
-
- if (cscov == 0) /* Indicates that full coverage is required. */
- ;
- else if (cscov < 8 || cscov > skb->len) {
- /*
- * Coverage length violates RFC 3828: log and discard silently.
- */
- net_dbg_ratelimited("UDPLite: bad csum coverage %d/%d\n",
- cscov, skb->len);
- return 1;
-
- } else if (cscov < skb->len) {
- UDP_SKB_CB(skb)->partial_cov = 1;
- UDP_SKB_CB(skb)->cscov = cscov;
- if (skb->ip_summed == CHECKSUM_COMPLETE)
- skb->ip_summed = CHECKSUM_NONE;
- skb->csum_valid = 0;
- }
-
- return 0;
-}
-
-/* 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);
-}
-
-void udplite4_register(void);
-#endif /* _UDPLITE_H */