[MPTCP][PATCH v7 mptcp-next 0/5] Add REMOVE_ADDR support
by Geliang Tang
v7:
- add RM_ADDR mib
- update RM_ADDR selftests test case
v6:
- rename lookup_anno_list_by_saddr to remove_anno_list_by_saddr as
Paolo suggested.
- add msk socket lock when traverse msk->conn_list as Paolo suggested.
- Since the first three patches in v5 have been merged to export
branch, drop them from this patchset.
- add remove addr and subflow selftest test case.
- this patchset is against mptcp_net-next's export branch.
v5:
- merge mptcp_nl_remove_subflow() and mptcp_nl_remove_addr()
- add cond_resched
- reduce the indentation level in mptcp_pm_nl_rm_addr_received
v4:
- update mptcp_subflow_shutdown()'s args.
- add rm_id check to make sure we don't shutdown the first subflow.
- add conn_list empty check.
- move anno_list to mptcp_pm_data.
- add a new patch 'mptcp: add remove subflow support'.
v3:
- fix memory leak and lock issue in v2.
- drop alist in v2.
- fix mptcp_subflow_shutdown's arguments.
- bzero remote in mptcp_pm_create_subflow_or_signal_addr.
- add more commit message.
Geliang Tang (5):
mptcp: remove addr and subflow in PM netlink
mptcp: add RM_ADDR mib
selftests: mptcp: drop first flag in do_rnd_write
selftests: mptcp: add remove addr and subflow test case
selftests: mptcp: add RM_ADDR mib check function
net/mptcp/mib.c | 1 +
net/mptcp/mib.h | 1 +
net/mptcp/options.c | 2 +
net/mptcp/pm.c | 7 +-
net/mptcp/pm_netlink.c | 87 ++++++++++++++++++-
net/mptcp/protocol.c | 2 +
net/mptcp/protocol.h | 2 +
.../selftests/net/mptcp/mptcp_connect.c | 7 +-
.../testing/selftests/net/mptcp/mptcp_join.sh | 67 ++++++++++++++
9 files changed, 166 insertions(+), 10 deletions(-)
--
2.17.1
2 months, 3 weeks
[MPTCP][PATCH v8 mptcp-next 0/8] Add REMOVE_ADDR support
by Geliang Tang
v8:
- drop anno_list in v7.
We don't need to add a new list, conn_list is enough for the signal
address and local subflow.
- fix local_id and remote_id issues.
The RM_ADDR logic uses an address id to identify the removing
address, so we must make sure the subflow's local_id and remote_id be
set properly.
- fix mptcp_pm_nl_rm_addr_received logic issue
- update selftests
v7:
- add RM_ADDR mib
- update RM_ADDR selftests test case
v6:
- rename lookup_anno_list_by_saddr to remove_anno_list_by_saddr as
Paolo suggested.
- add msk socket lock when traverse msk->conn_list as Paolo suggested.
- Since the first three patches in v5 have been merged to export
branch, drop them from this patchset.
- add remove addr and subflow selftest test case.
- this patchset is against mptcp_net-next's export branch.
v5:
- merge mptcp_nl_remove_subflow() and mptcp_nl_remove_addr()
- add cond_resched
- reduce the indentation level in mptcp_pm_nl_rm_addr_received
v4:
- update mptcp_subflow_shutdown()'s args.
- add rm_id check to make sure we don't shutdown the first subflow.
- add conn_list empty check.
- move anno_list to mptcp_pm_data.
- add a new patch 'mptcp: add remove subflow support'.
v3:
- fix memory leak and lock issue in v2.
- drop alist in v2.
- fix mptcp_subflow_shutdown's arguments.
- bzero remote in mptcp_pm_create_subflow_or_signal_addr.
- add more commit message.
Geliang Tang (8):
mptcp: remove addr and subflow in PM netlink
mptcp: fix mptcp_pm_nl_rm_addr_received logic issue
mptcp: implementing mptcp_pm_remove_subflow
mptcp: fix every subflow's local_id is zero
mptcp: fix subflow's remote_id is zero issue
mptcp: add RM_ADDR related mibs
selftests: mptcp: add remove cfg in mptcp_connect
selftests: mptcp: add remove addr and subflow test cases
net/mptcp/mib.c | 2 +
net/mptcp/mib.h | 2 +
net/mptcp/pm.c | 25 ++-
net/mptcp/pm_netlink.c | 105 +++++++++++--
net/mptcp/protocol.c | 4 +
net/mptcp/protocol.h | 5 +-
net/mptcp/subflow.c | 8 +-
.../selftests/net/mptcp/mptcp_connect.c | 18 ++-
.../testing/selftests/net/mptcp/mptcp_join.sh | 142 +++++++++++++++++-
9 files changed, 288 insertions(+), 23 deletions(-)
--
2.17.1
2 months, 3 weeks
[MPTCP][PATCH v7 mptcp-next 0/4] add ADD_ADDR echo flag support
by Geliang Tang
v7:
- add accept_subflow re-check
v6:
- add "drop re-check mechanism for PM's flags"
v5:
- move READ_ONCE(msk->pm.add_addr_echo) into mptcp_pm_add_addr_signal
- move mptcp_pm_announce_addr into mptcp_pm_nl_add_addr_received and
mptcp_pm_add_addr_received
v4:
- Just updated some log messages in mptcp_join.sh
v3:
- move add_addr_echo into mptcp_pm_announce_addr()
- check return value of mptcp_pm_add_add_received
- hold lock for add_addr_echo writing
v2:
- add ADD_ADDR mibs
- add selftests for ADD_ADDR
v1:
- mptcp: send out ADD_ADDR with echo flag
Geliang Tang (4):
mptcp: send out ADD_ADDR with echo flag
mptcp: add ADD_ADDR related mibs
selftests: mptcp: add ADD_ADDR mibs check function
mptcp: add accept_subflow re-check
net/mptcp/mib.c | 2 +
net/mptcp/mib.h | 2 +
net/mptcp/options.c | 34 +++++++++-----
net/mptcp/pm.c | 28 ++++++------
net/mptcp/pm_netlink.c | 4 +-
net/mptcp/protocol.h | 6 ++-
.../testing/selftests/net/mptcp/mptcp_join.sh | 44 +++++++++++++++++++
7 files changed, 92 insertions(+), 28 deletions(-)
--
2.17.1
2 months, 3 weeks
[PATCH net-next] tcp: propagate MPTCP skb extensions on xmit splits
by Paolo Abeni
When the TCP stack splits a packet on the write queue, the tail
half currently lose the associated skb extensions, and will not
carry the DSM on the wire.
The above does not cause functional problems and is allowed by
the RFC, but interact badly with GRO and RX coalescing, as possible
candidates for aggregation will carry different TCP options.
This change tries to improve the MPTCP behavior, propagating the
skb estensions on split.
Additionally, we must prevent the MPTCP stack from updating the
mapping after the split occour: that will both violate the RFC and
fool the reader.
Signed-off-by: Paolo Abeni <pabeni(a)redhat.com>
---
include/net/mptcp.h | 21 ++++++++++++++++++++-
net/ipv4/tcp_output.c | 3 +++
net/mptcp/protocol.c | 7 +++++--
3 files changed, 28 insertions(+), 3 deletions(-)
diff --git a/include/net/mptcp.h b/include/net/mptcp.h
index 3525d2822abe..fbf0849632cb 100644
--- a/include/net/mptcp.h
+++ b/include/net/mptcp.h
@@ -29,7 +29,8 @@ struct mptcp_ext {
use_ack:1,
ack64:1,
mpc_map:1,
- __unused:2;
+ frozen:1,
+ __unused:1;
/* one byte hole */
};
@@ -107,6 +108,19 @@ static inline void mptcp_skb_ext_move(struct sk_buff *to,
from->active_extensions = 0;
}
+static inline void mptcp_skb_ext_copy(struct sk_buff *to,
+ struct sk_buff *from)
+{
+ struct mptcp_ext *from_ext;
+
+ from_ext = skb_ext_find(from, SKB_EXT_MPTCP);
+ if (!from_ext)
+ return;
+
+ skb_ext_copy(to, from);
+ from_ext->frozen = 1;
+}
+
static inline bool mptcp_ext_matches(const struct mptcp_ext *to_ext,
const struct mptcp_ext *from_ext)
{
@@ -195,6 +209,11 @@ static inline void mptcp_skb_ext_move(struct sk_buff *to,
{
}
+static inline void mptcp_skb_ext_copy(struct sk_buff *to,
+ struct sk_buff *from)
+{
+}
+
static inline bool mptcp_skb_can_collapse(const struct sk_buff *to,
const struct sk_buff *from)
{
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 85ff417bda7f..c66f5bd5f64f 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1411,6 +1411,7 @@ int tcp_fragment(struct sock *sk, enum tcp_queue tcp_queue,
if (!buff)
return -ENOMEM; /* We'll just try again later. */
skb_copy_decrypted(buff, skb);
+ mptcp_skb_ext_copy(buff, skb);
sk_wmem_queued_add(sk, buff->truesize);
sk_mem_charge(sk, buff->truesize);
@@ -1966,6 +1967,7 @@ static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len,
if (unlikely(!buff))
return -ENOMEM;
skb_copy_decrypted(buff, skb);
+ mptcp_skb_ext_copy(buff, skb);
sk_wmem_queued_add(sk, buff->truesize);
sk_mem_charge(sk, buff->truesize);
@@ -2236,6 +2238,7 @@ static int tcp_mtu_probe(struct sock *sk)
skb = tcp_send_head(sk);
skb_copy_decrypted(nskb, skb);
+ mptcp_skb_ext_copy(nskb, skb);
TCP_SKB_CB(nskb)->seq = TCP_SKB_CB(skb)->seq;
TCP_SKB_CB(nskb)->end_seq = TCP_SKB_CB(skb)->seq + probe_size;
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 1fd80f8c7baa..198dcd7b2bd6 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -752,8 +752,11 @@ static bool mptcp_skb_can_collapse_to(u64 write_seq,
if (!tcp_skb_can_collapse_to(skb))
return false;
- /* can collapse only if MPTCP level sequence is in order */
- return mpext && mpext->data_seq + mpext->data_len == write_seq;
+ /* can collapse only if MPTCP level sequence is in order and this
+ * mapping has not been xmitted yet
+ */
+ return mpext && mpext->data_seq + mpext->data_len == write_seq &&
+ !mpext->frozen;
}
static bool mptcp_frag_can_collapse_to(const struct mptcp_sock *msk,
--
2.26.2
3 months
[PATCH net-next] mptcp: Remove unused macro MPTCP_SAME_STATE
by YueHaibing
There is no caller in tree any more.
Signed-off-by: YueHaibing <yuehaibing(a)huawei.com>
---
net/mptcp/protocol.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 1aad411a0e46..e6216c4f308c 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -24,8 +24,6 @@
#include "protocol.h"
#include "mib.h"
-#define MPTCP_SAME_STATE TCP_MAX_STATES
-
#if IS_ENABLED(CONFIG_MPTCP_IPV6)
struct mptcp6_sock {
struct mptcp_sock msk;
--
2.17.1
3 months
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