[PATCH iproute2 net-next v2] tc: m_csum: add support for SCTP checksum
From: Davide Caratti <hidden>
Date: 2017-01-20 10:17:45
'sctp' parameter can now be used as 'csum' target to enable CRC32c
computation on SCTP packets.
Signed-off-by: Davide Caratti <redacted>
---
Notes:
V2
- update man/man8/tc-csum.8 to include 'sctp' target
man/man8/tc-csum.8 | 7 +++++--
tc/m_csum.c | 11 ++++++++---
2 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/man/man8/tc-csum.8 b/man/man8/tc-csum.8
index 3a64c82..f4392a4 100644
--- a/man/man8/tc-csum.8
+++ b/man/man8/tc-csum.8@@ -19,6 +19,7 @@ csum - checksum update action .BR tcp " |" .BR udp " |" .BR udplite " |" +.BR sctp " |" .IR SWEETS " }" .ti -8
@@ -43,9 +44,11 @@ IGMP header TCP header .RB ( tcp ), UDP header -.RB ( udp ") or" +.RB ( udp ), UDPLite header -.RB ( udplite ). +.RB ( udplite ") or" +SCTP header +.RB ( sctp ). .TP .B SWEETS These are merely syntactic sugar and ignored internally.
diff --git a/tc/m_csum.c b/tc/m_csum.c
index d5b1af6..0ee8cad 100644
--- a/tc/m_csum.c
+++ b/tc/m_csum.c@@ -24,7 +24,7 @@ explain(void) { fprintf(stderr, "Usage: ... csum <UPDATE>\n" "Where: UPDATE := <TARGET> [<UPDATE>]\n" - " TARGET := { ip4h | icmp | igmp | tcp | udp | udplite | <SWEETS> }\n" + " TARGET := { ip4h | icmp | igmp | tcp | udp | udplite | sctp | <SWEETS> }\n" " SWEETS := { and | or | \'+\' }\n"); }
@@ -65,6 +65,9 @@ parse_csum_args(int *argc_p, char ***argv_p, struct tc_csum *sel) else if (matches(*argv, "udplite") == 0) sel->update_flags |= TCA_CSUM_UPDATE_FLAG_UDPLITE; + else if (matches(*argv, "sctp") == 0) + sel->update_flags |= TCA_CSUM_UPDATE_FLAG_SCTP; + else if ((matches(*argv, "and") == 0) || (matches(*argv, "or") == 0) || (matches(*argv, "+") == 0))
@@ -160,6 +163,7 @@ print_csum(struct action_util *au, FILE *f, struct rtattr *arg) char *uflag_4 = ""; char *uflag_5 = ""; char *uflag_6 = ""; + char *uflag_7 = ""; int uflag_count = 0;
@@ -191,13 +195,14 @@ print_csum(struct action_util *au, FILE *f, struct rtattr *arg) CSUM_UFLAG_BUFFER(uflag_4, TCA_CSUM_UPDATE_FLAG_TCP, "tcp"); CSUM_UFLAG_BUFFER(uflag_5, TCA_CSUM_UPDATE_FLAG_UDP, "udp"); CSUM_UFLAG_BUFFER(uflag_6, TCA_CSUM_UPDATE_FLAG_UDPLITE, "udplite"); + CSUM_UFLAG_BUFFER(uflag_7, TCA_CSUM_UPDATE_FLAG_SCTP, "sctp"); if (!uflag_count) { uflag_1 = "?empty"; } - fprintf(f, "csum (%s%s%s%s%s%s) action %s\n", + fprintf(f, "csum (%s%s%s%s%s%s%s) action %s\n", uflag_1, uflag_2, uflag_3, - uflag_4, uflag_5, uflag_6, + uflag_4, uflag_5, uflag_6, uflag_7, action_n2a(sel->action)); fprintf(f, "\tindex %u ref %d bind %d", sel->index, sel->refcnt, sel->bindcnt);
--
2.7.4