diff options
| author | Peter Krystad <peter.krystad@linux.intel.com> | 2020-01-21 16:56:20 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-01-24 13:44:07 +0100 |
| commit | 79c0949e9a09f6a14a6dd18dc8396029423f9b68 (patch) | |
| tree | 98e6d16ac4d28c25a6c171706cb2ce90cec1bbdc /net/mptcp/protocol.c | |
| parent | cf7da0d66cc1a2a19fc5930bb746ffbb2d4cd1be (diff) | |
| download | linux-79c0949e9a09f6a14a6dd18dc8396029423f9b68.tar.bz2 | |
mptcp: Add key generation and token tree
Generate the local keys, IDSN, and token when creating a new socket.
Introduce the token tree to track all tokens in use using a radix tree
with the MPTCP token itself as the index.
Override the rebuild_header callback in inet_connection_sock_af_ops for
creating the local key on a new outgoing connection.
Override the init_req callback of tcp_request_sock_ops for creating the
local key on a new incoming connection.
Will be used to obtain the MPTCP parent socket to handle incoming joins.
Co-developed-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Co-developed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Co-developed-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com>
Signed-off-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp/protocol.c')
| -rw-r--r-- | net/mptcp/protocol.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index e08a25eabcd5..3f66b6a3bb28 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -201,6 +201,7 @@ static void mptcp_close(struct sock *sk, long timeout) struct mptcp_subflow_context *subflow, *tmp; struct mptcp_sock *msk = mptcp_sk(sk); + mptcp_token_destroy(msk->token); inet_sk_state_store(sk, TCP_CLOSE); lock_sock(sk); @@ -281,8 +282,10 @@ static struct sock *mptcp_accept(struct sock *sk, int flags, int *err, msk = mptcp_sk(new_mptcp_sock); msk->remote_key = subflow->remote_key; msk->local_key = subflow->local_key; + msk->token = subflow->token; msk->subflow = NULL; + mptcp_token_update_accept(newsk, new_mptcp_sock); newsk = new_mptcp_sock; mptcp_copy_inaddrs(newsk, ssk); list_add(&subflow->node, &msk->conn_list); @@ -299,6 +302,10 @@ static struct sock *mptcp_accept(struct sock *sk, int flags, int *err, return newsk; } +static void mptcp_destroy(struct sock *sk) +{ +} + static int mptcp_get_port(struct sock *sk, unsigned short snum) { struct mptcp_sock *msk = mptcp_sk(sk); @@ -331,6 +338,7 @@ void mptcp_finish_connect(struct sock *ssk) */ WRITE_ONCE(msk->remote_key, subflow->remote_key); WRITE_ONCE(msk->local_key, subflow->local_key); + WRITE_ONCE(msk->token, subflow->token); } static void mptcp_sock_graft(struct sock *sk, struct socket *parent) @@ -349,6 +357,7 @@ static struct proto mptcp_prot = { .close = mptcp_close, .accept = mptcp_accept, .shutdown = tcp_shutdown, + .destroy = mptcp_destroy, .sendmsg = mptcp_sendmsg, .recvmsg = mptcp_recvmsg, .hash = inet_hash, @@ -568,6 +577,12 @@ void __init mptcp_init(void) static struct proto_ops mptcp_v6_stream_ops; static struct proto mptcp_v6_prot; +static void mptcp_v6_destroy(struct sock *sk) +{ + mptcp_destroy(sk); + inet6_destroy_sock(sk); +} + static struct inet_protosw mptcp_v6_protosw = { .type = SOCK_STREAM, .protocol = IPPROTO_MPTCP, @@ -583,6 +598,7 @@ int mptcpv6_init(void) mptcp_v6_prot = mptcp_prot; strcpy(mptcp_v6_prot.name, "MPTCPv6"); mptcp_v6_prot.slab = NULL; + mptcp_v6_prot.destroy = mptcp_v6_destroy; mptcp_v6_prot.obj_size = sizeof(struct mptcp_sock) + sizeof(struct ipv6_pinfo); |