This patchset will add sctp_diag module to implement diag interface on sctp in kernel.
For a listening sctp endpoint, we will just dump it's ep info. For a sctp connection, we will the assoc info and it's ep info. The ss dump will looks like: [iproute2]# ./misc/ss --sctp -n -l State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 128 172.16.254.254:8888 *:* LISTEN 0 5 127.0.0.1:1234 *:* LISTEN 0 5 127.0.0.1:1234 *:* - ESTAB 0 0 127.0.0.1%lo:1234 127.0.0.1:4321 LISTEN 0 128 172.16.254.254:8888 *:* - ESTAB 0 0 172.16.254.254%eth1:8888 172.16.253.253:8888 - ESTAB 0 0 172.16.254.254%eth1:8888 172.16.1.1:8888 - ESTAB 0 0 172.16.254.254%eth1:8888 172.16.1.2:8888 - ESTAB 0 0 172.16.254.254%eth1:8888 172.16.2.1:8888 - ESTAB 0 0 172.16.254.254%eth1:8888 172.16.2.2:8888 - ESTAB 0 0 172.16.254.254%eth1:8888 172.16.3.1:8888 - ESTAB 0 0 172.16.254.254%eth1:8888 172.16.3.2:8888 LISTEN 0 0 127.0.0.1:4321 *:* - ESTAB 0 0 127.0.0.1%lo:4321 127.0.0.1:1234 The entries with '- ESTAB' are the assocs, some of them may belong to the same endpoint. So we will dump the parent endpoint first, like the entry with 'LISTEN'. then dump the assocs. ep and assocs entries will be dumped in right order so that ss can show them in tree format easily. Besides, this patchset also simplifies sctp proc codes, cause it has some similar codes with sctp diag in sctp transport traversal. Xin Long (7): sctp: add sctp_info dump api for sctp_diag sctp: export some apis or variables for sctp_diag sctp: export some functions for sctp_diag in inet_diag sctp: add the sctp_diag.c file sctp: reuse the some transport traversal functions in proc sctp: merge the seq_start/next/exits in remaddrs and assocs sctp: fix some rhashtable functions using in sctp proc/diag include/linux/sctp.h | 65 +++++ include/net/sctp/sctp.h | 16 ++ include/uapi/linux/inet_diag.h | 2 + net/ipv4/inet_diag.c | 9 +- net/sctp/Kconfig | 4 + net/sctp/Makefile | 1 + net/sctp/proc.c | 104 ++------ net/sctp/sctp_diag.c | 581 +++++++++++++++++++++++++++++++++++++++++ net/sctp/socket.c | 215 +++++++++++++++ 9 files changed, 911 insertions(+), 86 deletions(-) create mode 100644 net/sctp/sctp_diag.c -- 2.1.0
