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| author | Andrey Zhadchenko <andrey.zhadchenko@virtuozzo.com> | 2022-08-25 04:04:50 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-08-27 04:31:21 +0200 |
| commit | 347541e299d50c154f69ead0fcac2917a63e4481 (patch) | |
| tree | 9d4f28353719840bae6d488edad6bf534cabadd4 | |
| parent | openvswitch: allow specifying ifindex of new interfaces (diff) | |
| download | linux-347541e299d50c154f69ead0fcac2917a63e4481.tar.xz linux-347541e299d50c154f69ead0fcac2917a63e4481.zip | |
openvswitch: add OVS_DP_ATTR_PER_CPU_PIDS to get requests
CRIU needs OVS_DP_ATTR_PER_CPU_PIDS to checkpoint/restore newest
openvswitch versions.
Add pids to generic datapath reply. Limit exported pids amount to
nr_cpu_ids.
Signed-off-by: Andrey Zhadchenko <andrey.zhadchenko@virtuozzo.com>
Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/openvswitch/datapath.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index 1ad771d39d1e..e4667700336b 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -1523,6 +1523,7 @@ static size_t ovs_dp_cmd_msg_size(void) msgsize += nla_total_size_64bit(sizeof(struct ovs_dp_megaflow_stats)); msgsize += nla_total_size(sizeof(u32)); /* OVS_DP_ATTR_USER_FEATURES */ msgsize += nla_total_size(sizeof(u32)); /* OVS_DP_ATTR_MASKS_CACHE_SIZE */ + msgsize += nla_total_size(sizeof(u32) * nr_cpu_ids); /* OVS_DP_ATTR_PER_CPU_PIDS */ return msgsize; } @@ -1534,7 +1535,8 @@ static int ovs_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb, struct ovs_header *ovs_header; struct ovs_dp_stats dp_stats; struct ovs_dp_megaflow_stats dp_megaflow_stats; - int err; + struct dp_nlsk_pids *pids = ovsl_dereference(dp->upcall_portids); + int err, pids_len; ovs_header = genlmsg_put(skb, portid, seq, &dp_datapath_genl_family, flags, cmd); @@ -1564,6 +1566,12 @@ static int ovs_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb, ovs_flow_tbl_masks_cache_size(&dp->table))) goto nla_put_failure; + if (dp->user_features & OVS_DP_F_DISPATCH_UPCALL_PER_CPU && pids) { + pids_len = min(pids->n_pids, nr_cpu_ids) * sizeof(u32); + if (nla_put(skb, OVS_DP_ATTR_PER_CPU_PIDS, pids_len, &pids->pids)) + goto nla_put_failure; + } + genlmsg_end(skb, ovs_header); return 0; |