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Date: Tue, 5 Apr 2016 12:06:26 +0800
From: Xin Long <lucien.xin@...il.com>
To: network dev <netdev@...r.kernel.org>, linux-sctp@...r.kernel.org
Cc: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
Vlad Yasevich <vyasevich@...il.com>, daniel@...earbox.net,
davem@...emloft.net
Subject: [PATCH net-next 1/7] sctp: add sctp_info dump api for sctp_diag
sctp_diag will dump some important details of sctp's assoc or ep, we use
sctp_info to describe them, sctp_get_sctp_info to get them, and export
it to sctp_diag.ko.
Signed-off-by: Xin Long <lucien.xin@...il.com>
---
include/linux/sctp.h | 65 +++++++++++++++++++++++++++++++++++++
include/net/sctp/sctp.h | 3 ++
net/sctp/socket.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 154 insertions(+)
diff --git a/include/linux/sctp.h b/include/linux/sctp.h
index a9414fd..a448ebc 100644
--- a/include/linux/sctp.h
+++ b/include/linux/sctp.h
@@ -705,4 +705,69 @@ typedef struct sctp_auth_chunk {
sctp_authhdr_t auth_hdr;
} __packed sctp_auth_chunk_t;
+struct sctp_info {
+ __u32 sctpi_tag;
+ __u32 sctpi_state;
+ __u32 sctpi_rwnd;
+ __u16 sctpi_unackdata;
+ __u16 sctpi_penddata;
+ __u16 sctpi_instrms;
+ __u16 sctpi_outstrms;
+ __u32 sctpi_fragmentation_point;
+ __u32 sctpi_inqueue;
+ __u32 sctpi_outqueue;
+ __u32 sctpi_overall_error;
+ __u32 sctpi_max_burst;
+ __u32 sctpi_maxseg;
+ __u32 sctpi_peer_rwnd;
+ __u32 sctpi_peer_tag;
+ __u8 sctpi_peer_capable;
+ __u8 sctpi_peer_sack;
+
+ /* assoc status info */
+ __u64 sctpi_isacks;
+ __u64 sctpi_osacks;
+ __u64 sctpi_opackets;
+ __u64 sctpi_ipackets;
+ __u64 sctpi_rtxchunks;
+ __u64 sctpi_outofseqtsns;
+ __u64 sctpi_idupchunks;
+ __u64 sctpi_gapcnt;
+ __u64 sctpi_ouodchunks;
+ __u64 sctpi_iuodchunks;
+ __u64 sctpi_oodchunks;
+ __u64 sctpi_iodchunks;
+ __u64 sctpi_octrlchunks;
+ __u64 sctpi_ictrlchunks;
+
+ /* primary transport info */
+ struct sockaddr_storage sctpi_p_address;
+ __s32 sctpi_p_state;
+ __u32 sctpi_p_cwnd;
+ __u32 sctpi_p_srtt;
+ __u32 sctpi_p_rto;
+ __u32 sctpi_p_hbinterval;
+ __u32 sctpi_p_pathmaxrxt;
+ __u32 sctpi_p_sackdelay;
+ __u32 sctpi_p_sackfreq;
+ __u32 sctpi_p_ssthresh;
+ __u32 sctpi_p_partial_bytes_acked;
+ __u32 sctpi_p_flight_size;
+ __u16 sctpi_p_error;
+
+ /* sctp sock info */
+ __u32 sctpi_s_autoclose;
+ __u32 sctpi_s_adaptation_ind;
+ __u32 sctpi_s_pd_point;
+ __u8 sctpi_s_nodelay;
+ __u8 sctpi_s_disable_fragments;
+ __u8 sctpi_s_v4mapped;
+ __u8 sctpi_s_frag_interleave;
+};
+
+struct sctp_infox {
+ struct sctp_info *sctpinfo;
+ struct sctp_association *asoc;
+};
+
#endif /* __LINUX_SCTP_H__ */
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 65521cf..36e1eae 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -116,6 +116,9 @@ extern struct percpu_counter sctp_sockets_allocated;
int sctp_asconf_mgmt(struct sctp_sock *, struct sctp_sockaddr_entry *);
struct sk_buff *sctp_skb_recv_datagram(struct sock *, int, int, int *);
+int sctp_get_sctp_info(struct sock *sk, struct sctp_association *asoc,
+ struct sctp_info *info);
+
/*
* sctp/primitive.c
*/
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 878d28e..8f79f23 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4202,6 +4202,92 @@ static void sctp_shutdown(struct sock *sk, int how)
}
}
+int sctp_get_sctp_info(struct sock *sk, struct sctp_association *asoc,
+ struct sctp_info *info)
+{
+ struct sctp_transport *prim;
+ struct list_head *pos, *temp;
+ int mask;
+
+ memset(info, 0, sizeof(*info));
+ if (!asoc) {
+ struct sctp_sock *sp = sctp_sk(sk);
+
+ info->sctpi_s_autoclose = sp->autoclose;
+ info->sctpi_s_adaptation_ind = sp->adaptation_ind;
+ info->sctpi_s_pd_point = sp->pd_point;
+ info->sctpi_s_nodelay = sp->nodelay;
+ info->sctpi_s_disable_fragments = sp->disable_fragments;
+ info->sctpi_s_v4mapped = sp->v4mapped;
+ info->sctpi_s_frag_interleave = sp->frag_interleave;
+
+ return 0;
+ }
+
+ info->sctpi_tag = asoc->c.my_vtag;
+ info->sctpi_state = asoc->state;
+ info->sctpi_rwnd = asoc->a_rwnd;
+ info->sctpi_unackdata = asoc->unack_data;
+ info->sctpi_penddata = sctp_tsnmap_pending(&asoc->peer.tsn_map);
+ info->sctpi_instrms = asoc->c.sinit_max_instreams;
+ info->sctpi_outstrms = asoc->c.sinit_num_ostreams;
+ list_for_each_safe(pos, temp, &asoc->base.inqueue.in_chunk_list)
+ info->sctpi_inqueue++;
+ list_for_each_safe(pos, temp, &asoc->outqueue.out_chunk_list)
+ info->sctpi_outqueue++;
+ info->sctpi_overall_error = asoc->overall_error_count;
+ info->sctpi_max_burst = asoc->max_burst;
+ info->sctpi_maxseg = asoc->frag_point;
+ info->sctpi_peer_rwnd = asoc->peer.rwnd;
+ info->sctpi_peer_tag = asoc->c.peer_vtag;
+
+ mask = asoc->peer.ecn_capable << 1;
+ mask = (mask | asoc->peer.ipv4_address) << 1;
+ mask = (mask | asoc->peer.ipv6_address) << 1;
+ mask = (mask | asoc->peer.hostname_address) << 1;
+ mask = (mask | asoc->peer.asconf_capable) << 1;
+ mask = (mask | asoc->peer.prsctp_capable) << 1;
+ mask = (mask | asoc->peer.auth_capable);
+ info->sctpi_peer_capable = mask;
+ mask = asoc->peer.sack_needed << 1;
+ mask = (mask | asoc->peer.sack_generation) << 1;
+ mask = (mask | asoc->peer.zero_window_announced);
+ info->sctpi_peer_sack = mask;
+
+ info->sctpi_isacks = asoc->stats.isacks;
+ info->sctpi_osacks = asoc->stats.osacks;
+ info->sctpi_opackets = asoc->stats.opackets;
+ info->sctpi_ipackets = asoc->stats.ipackets;
+ info->sctpi_rtxchunks = asoc->stats.rtxchunks;
+ info->sctpi_outofseqtsns = asoc->stats.outofseqtsns;
+ info->sctpi_idupchunks = asoc->stats.idupchunks;
+ info->sctpi_gapcnt = asoc->stats.gapcnt;
+ info->sctpi_ouodchunks = asoc->stats.ouodchunks;
+ info->sctpi_iuodchunks = asoc->stats.iuodchunks;
+ info->sctpi_oodchunks = asoc->stats.oodchunks;
+ info->sctpi_iodchunks = asoc->stats.iodchunks;
+ info->sctpi_octrlchunks = asoc->stats.octrlchunks;
+ info->sctpi_ictrlchunks = asoc->stats.ictrlchunks;
+
+ prim = asoc->peer.primary_path;
+ memcpy(&info->sctpi_p_address, &prim->ipaddr,
+ sizeof(struct sockaddr_storage));
+ info->sctpi_p_state = prim->state;
+ info->sctpi_p_cwnd = prim->cwnd;
+ info->sctpi_p_srtt = prim->srtt;
+ info->sctpi_p_rto = jiffies_to_msecs(prim->rto);
+ info->sctpi_p_hbinterval = prim->hbinterval;
+ info->sctpi_p_pathmaxrxt = prim->pathmaxrxt;
+ info->sctpi_p_sackdelay = jiffies_to_msecs(prim->sackdelay);
+ info->sctpi_p_ssthresh = prim->ssthresh;
+ info->sctpi_p_partial_bytes_acked = prim->partial_bytes_acked;
+ info->sctpi_p_flight_size = prim->flight_size;
+ info->sctpi_p_error = prim->error_count;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sctp_get_sctp_info);
+
/* 7.2.1 Association Status (SCTP_STATUS)
* Applications can retrieve current status information about an
--
2.1.0
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