diff mbox series

[net,3/7] chtls: Fix panic when route to peer not configured

Message ID 20210106042912.23512-4-ayush.sawal@chelsio.com (mailing list archive)
State Accepted
Commit 5a5fac9966bb6d513198634b0b1357be7e8447d2
Delegated to: Netdev Maintainers
Headers show
Series Bug fixes for chtls driver | expand

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netdev/cc_maintainers warning 3 maintainers not CCed: werner@chelsio.com vinay.yadav@chelsio.com atul.gupta@chelsio.com
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 1 this patch: 1
netdev/kdoc success Errors and warnings before: 0 this patch: 0
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 46 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 1 this patch: 1
netdev/header_inline success Link
netdev/stable success Stable not CCed

Commit Message

Ayush Sawal Jan. 6, 2021, 4:29 a.m. UTC
If route to peer is not configured, we might get non tls
devices from dst_neigh_lookup() which is invalid, adding a
check to avoid it.

Fixes: cc35c88ae4db ("crypto : chtls - CPL handler definition")
Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com>
Signed-off-by: Ayush Sawal <ayush.sawal@chelsio.com>
---
 .../chelsio/inline_crypto/chtls/chtls_cm.c         | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
index 431d1e3844ab..04a8bd5af3b9 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
@@ -1109,6 +1109,7 @@  static struct sock *chtls_recv_sock(struct sock *lsk,
 				    const struct cpl_pass_accept_req *req,
 				    struct chtls_dev *cdev)
 {
+	struct adapter *adap = pci_get_drvdata(cdev->pdev);
 	struct neighbour *n = NULL;
 	struct inet_sock *newinet;
 	const struct iphdr *iph;
@@ -1118,9 +1119,10 @@  static struct sock *chtls_recv_sock(struct sock *lsk,
 	struct dst_entry *dst;
 	struct tcp_sock *tp;
 	struct sock *newsk;
+	bool found = false;
 	u16 port_id;
 	int rxq_idx;
-	int step;
+	int step, i;
 
 	iph = (const struct iphdr *)network_hdr;
 	newsk = tcp_create_openreq_child(lsk, oreq, cdev->askb);
@@ -1152,7 +1154,7 @@  static struct sock *chtls_recv_sock(struct sock *lsk,
 		n = dst_neigh_lookup(dst, &ip6h->saddr);
 #endif
 	}
-	if (!n)
+	if (!n || !n->dev)
 		goto free_sk;
 
 	ndev = n->dev;
@@ -1161,6 +1163,13 @@  static struct sock *chtls_recv_sock(struct sock *lsk,
 	if (is_vlan_dev(ndev))
 		ndev = vlan_dev_real_dev(ndev);
 
+	for_each_port(adap, i)
+		if (cdev->ports[i] == ndev)
+			found = true;
+
+	if (!found)
+		goto free_dst;
+
 	port_id = cxgb4_port_idx(ndev);
 
 	csk = chtls_sock_create(cdev);
@@ -1238,6 +1247,7 @@  static struct sock *chtls_recv_sock(struct sock *lsk,
 free_csk:
 	chtls_sock_release(&csk->kref);
 free_dst:
+	neigh_release(n);
 	dst_release(dst);
 free_sk:
 	inet_csk_prepare_forced_close(newsk);