From: Mat Martineau <mathew.j.martineau@linux.intel.com>
To: netdev@vger.kernel.org
Cc: Geliang Tang <geliangtang@gmail.com>,
davem@davemloft.net, kuba@kernel.org,
matthieu.baerts@tessares.net, mptcp@lists.linux.dev,
pabeni@redhat.com,
Mat Martineau <mathew.j.martineau@linux.intel.com>
Subject: [PATCH net-next 05/16] mptcp: send out checksum for DSS
Date: Thu, 17 Jun 2021 16:46:11 -0700 [thread overview]
Message-ID: <20210617234622.472030-6-mathew.j.martineau@linux.intel.com> (raw)
In-Reply-To: <20210617234622.472030-1-mathew.j.martineau@linux.intel.com>
From: Geliang Tang <geliangtang@gmail.com>
In mptcp_write_options, if the checksum is enabled, adjust the option
length and send out the data checksum with DSS suboption.
Co-developed-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
---
net/mptcp/options.c | 28 +++++++++++++++++++++-------
1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index b4da08db1221..1468774f1f87 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -478,6 +478,9 @@ static bool mptcp_established_options_mp(struct sock *sk, struct sk_buff *skb,
if (data_len > 0) {
len = TCPOLEN_MPTCP_MPC_ACK_DATA;
if (opts->csum_reqd) {
+ /* we need to propagate more info to csum the pseudo hdr */
+ opts->ext_copy.data_seq = mpext->data_seq;
+ opts->ext_copy.subflow_seq = mpext->subflow_seq;
opts->ext_copy.csum = mpext->csum;
len += TCPOLEN_MPTCP_DSS_CHECKSUM;
}
@@ -545,18 +548,21 @@ static bool mptcp_established_options_dss(struct sock *sk, struct sk_buff *skb,
bool ret = false;
u64 ack_seq;
+ opts->csum_reqd = READ_ONCE(msk->csum_enabled);
mpext = skb ? mptcp_get_ext(skb) : NULL;
if (!skb || (mpext && mpext->use_map) || snd_data_fin_enable) {
- unsigned int map_size;
+ unsigned int map_size = TCPOLEN_MPTCP_DSS_BASE + TCPOLEN_MPTCP_DSS_MAP64;
- map_size = TCPOLEN_MPTCP_DSS_BASE + TCPOLEN_MPTCP_DSS_MAP64;
+ if (mpext) {
+ if (opts->csum_reqd)
+ map_size += TCPOLEN_MPTCP_DSS_CHECKSUM;
- remaining -= map_size;
- dss_size = map_size;
- if (mpext)
opts->ext_copy = *mpext;
+ }
+ remaining -= map_size;
+ dss_size = map_size;
if (skb && snd_data_fin_enable)
mptcp_write_data_fin(subflow, skb, &opts->ext_copy);
ret = true;
@@ -1346,6 +1352,9 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
flags |= MPTCP_DSS_HAS_MAP | MPTCP_DSS_DSN64;
if (mpext->data_fin)
flags |= MPTCP_DSS_DATA_FIN;
+
+ if (opts->csum_reqd)
+ len += TCPOLEN_MPTCP_DSS_CHECKSUM;
}
*ptr++ = mptcp_option(MPTCPOPT_DSS, len, 0, flags);
@@ -1365,8 +1374,13 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
ptr += 2;
put_unaligned_be32(mpext->subflow_seq, ptr);
ptr += 1;
- put_unaligned_be32(mpext->data_len << 16 |
- TCPOPT_NOP << 8 | TCPOPT_NOP, ptr);
+ if (opts->csum_reqd) {
+ put_unaligned_be32(mpext->data_len << 16 |
+ mptcp_make_csum(mpext), ptr);
+ } else {
+ put_unaligned_be32(mpext->data_len << 16 |
+ TCPOPT_NOP << 8 | TCPOPT_NOP, ptr);
+ }
}
}
--
2.32.0
next prev parent reply other threads:[~2021-06-17 23:46 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-17 23:46 [PATCH net-next 00/16] mptcp: DSS checksum support Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 01/16] mptcp: add csum_enabled in mptcp_sock Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 02/16] mptcp: generate the data checksum Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 03/16] mptcp: add csum_reqd in mptcp_out_options Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 04/16] mptcp: send out checksum for MP_CAPABLE with data Mat Martineau
2021-06-17 23:46 ` Mat Martineau [this message]
2021-06-17 23:46 ` [PATCH net-next 06/16] mptcp: add sk parameter for mptcp_get_options Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 07/16] mptcp: add csum_reqd in mptcp_options_received Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 08/16] mptcp: receive checksum for MP_CAPABLE with data Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 09/16] mptcp: receive checksum for DSS Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 10/16] mptcp: validate the data checksum Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 11/16] mptcp: tune re-injections for csum enabled mode Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 12/16] mptcp: add the mib for data checksum Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 13/16] mptcp: add a new sysctl checksum_enabled Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 14/16] mptcp: dump csum fields in mptcp_dump_mpext Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 15/16] selftests: mptcp: enable checksum in mptcp_connect.sh Mat Martineau
2021-06-17 23:46 ` [PATCH net-next 16/16] selftests: mptcp: enable checksum in mptcp_join.sh Mat Martineau
2021-06-18 18:50 ` [PATCH net-next 00/16] mptcp: DSS checksum support patchwork-bot+netdevbpf
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