diff options
| author | Hoang Le <hoang.h.le@dektech.com.au> | 2018-10-11 04:43:08 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-16 07:56:56 +0300 |
| commit | acad76a5f6165dc451c5f35edb35d77def1f2e15 (patch) | |
| tree | 5147882333c6af295ec14678704799e64a55fc0a /net/tipc | |
| parent | 1986647c2fc369b1865fb9bc9a213b48444580cb (diff) | |
| download | linux-acad76a5f6165dc451c5f35edb35d77def1f2e15.tar.xz | |
tipc: support binding to specific ip address when activating UDP bearer
INADDR_ANY is hard-coded when activating UDP bearer. So, we could not
bind to a specific IP address even with replicast mode using - given
remote ip address instead of using multicast ip address.
In this commit, we fixed it by checking and switch to use appropriate
local ip address.
before:
$netstat -plu
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address
udp 0 0 **0.0.0.0:6118** 0.0.0.0:*
after:
$netstat -plu
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address
udp 0 0 **10.0.0.2:6118** 0.0.0.0:*
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/udp_media.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c index 9783101bc4a9..10dc59ce9c82 100644 --- a/net/tipc/udp_media.c +++ b/net/tipc/udp_media.c @@ -650,6 +650,7 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b, struct udp_tunnel_sock_cfg tuncfg = {NULL}; struct nlattr *opts[TIPC_NLA_UDP_MAX + 1]; u8 node_id[NODE_ID_LEN] = {0,}; + int rmcast = 0; ub = kzalloc(sizeof(*ub), GFP_ATOMIC); if (!ub) @@ -680,6 +681,9 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b, if (err) goto err; + /* Checking remote ip address */ + rmcast = tipc_udp_is_mcast_addr(&remote); + /* Autoconfigure own node identity if needed */ if (!tipc_own_id(net)) { memcpy(node_id, local.ipv6.in6_u.u6_addr8, 16); @@ -705,7 +709,12 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b, goto err; } udp_conf.family = AF_INET; - udp_conf.local_ip.s_addr = htonl(INADDR_ANY); + + /* Switch to use ANY to receive packets from group */ + if (rmcast) + udp_conf.local_ip.s_addr = htonl(INADDR_ANY); + else + udp_conf.local_ip.s_addr = local.ipv4.s_addr; udp_conf.use_udp_checksums = false; ub->ifindex = dev->ifindex; if (tipc_mtu_bad(dev, sizeof(struct iphdr) + @@ -719,7 +728,10 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b, udp_conf.family = AF_INET6; udp_conf.use_udp6_tx_checksums = true; udp_conf.use_udp6_rx_checksums = true; - udp_conf.local_ip6 = in6addr_any; + if (rmcast) + udp_conf.local_ip6 = in6addr_any; + else + udp_conf.local_ip6 = local.ipv6; b->mtu = 1280; #endif } else { @@ -741,7 +753,7 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b, * is used if it's a multicast address. */ memcpy(&b->bcast_addr.value, &remote, sizeof(remote)); - if (tipc_udp_is_mcast_addr(&remote)) + if (rmcast) err = enable_mcast(ub, &remote); else err = tipc_udp_rcast_add(b, &remote); |