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macsec: delete new rxsc when offload fails

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[ Upstream commit 93a3094782 ]

Currently we get an inconsistent state:
 - netlink returns the error to userspace
 - the RXSC is installed but not offloaded

Then the device could get confused when we try to add an RXSA, because
the RXSC isn't supposed to exist.

Fixes: 3cf3227a21 ("net: macsec: hardware offloading infrastructure")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Antoine Tenart <atenart@kernel.org>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sabrina Dubroca
2022-11-02 22:33:13 +01:00
committed by Greg Kroah-Hartman
parent 50868de7dc
commit 3b05d9073a
1 changed files with 2 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/macsec.c
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@@ -1867,7 +1867,6 @@ static int macsec_add_rxsc(struct sk_buff *skb, struct genl_info *info)
struct macsec_rx_sc *rx_sc;
struct nlattr *tb_rxsc[MACSEC_RXSC_ATTR_MAX + 1];
struct macsec_secy *secy;
bool was_active;
int ret;
if (!attrs[MACSEC_ATTR_IFINDEX])
@@ -1895,7 +1894,6 @@ static int macsec_add_rxsc(struct sk_buff *skb, struct genl_info *info)
return PTR_ERR(rx_sc);
}
was_active = rx_sc->active;
if (tb_rxsc[MACSEC_RXSC_ATTR_ACTIVE])
rx_sc->active = !!nla_get_u8(tb_rxsc[MACSEC_RXSC_ATTR_ACTIVE]);
@@ -1922,7 +1920,8 @@ static int macsec_add_rxsc(struct sk_buff *skb, struct genl_info *info)
return 0;
cleanup:
rx_sc->active = was_active;
del_rx_sc(secy, sci);
free_rx_sc(rx_sc);
rtnl_unlock();
return ret;
}