From: Somnath Kotur somnath.kotur@broadcom.com

stable inclusion from stable-v5.10.184 commit 3f6dfff5fe416bda6469cf235eaa9c54fee2a0bc category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8L4MY

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...

--------------------------------

[ Upstream commit 1eb4ef12591348c440ac9d6efcf7521e73cf2b10 ]

As per the new udp tunnel framework, drivers which need to know the details of a port entry (i.e. port type) when it gets deleted should use the .set_port / .unset_port callbacks.

Implementing the current .udp_tunnel_sync callback would mean that the deleted tunnel port entry would be all zeros. This used to work on older firmware because it would not check the input when deleting a tunnel port. With newer firmware, the delete will now fail and subsequent tunnel port allocation will fail as a result.

Fixes: 442a35a5a7aa ("bnxt: convert to new udp_tunnel_nic infra") Reviewed-by: Kalesh Anakkur Purayil kalesh-anakkur.purayil@broadcom.com Signed-off-by: Somnath Kotur somnath.kotur@broadcom.com Signed-off-by: Michael Chan michael.chan@broadcom.com Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Dapeng Yu dapeng.yu@windriver.com --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 25 ++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 4db84ed9d698..3dc826353b02 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -12099,26 +12099,37 @@ static void bnxt_cfg_ntp_filters(struct bnxt *bp)

#endif /* CONFIG_RFS_ACCEL */

-static int bnxt_udp_tunnel_sync(struct net_device *netdev, unsigned int table) +static int bnxt_udp_tunnel_set_port(struct net_device *netdev, unsigned int table, + unsigned int entry, struct udp_tunnel_info *ti) { struct bnxt *bp = netdev_priv(netdev); - struct udp_tunnel_info ti; unsigned int cmd;

- udp_tunnel_nic_get_port(netdev, table, 0, &ti); - if (ti.type == UDP_TUNNEL_TYPE_VXLAN) + if (ti->type == UDP_TUNNEL_TYPE_VXLAN) cmd = TUNNEL_DST_PORT_FREE_REQ_TUNNEL_TYPE_VXLAN; else cmd = TUNNEL_DST_PORT_FREE_REQ_TUNNEL_TYPE_GENEVE;

- if (ti.port) - return bnxt_hwrm_tunnel_dst_port_alloc(bp, ti.port, cmd); + return bnxt_hwrm_tunnel_dst_port_alloc(bp, ti->port, cmd); +} + +static int bnxt_udp_tunnel_unset_port(struct net_device *netdev, unsigned int table, + unsigned int entry, struct udp_tunnel_info *ti) +{ + struct bnxt *bp = netdev_priv(netdev); + unsigned int cmd; + + if (ti->type == UDP_TUNNEL_TYPE_VXLAN) + cmd = TUNNEL_DST_PORT_FREE_REQ_TUNNEL_TYPE_VXLAN; + else + cmd = TUNNEL_DST_PORT_FREE_REQ_TUNNEL_TYPE_GENEVE;

return bnxt_hwrm_tunnel_dst_port_free(bp, cmd); }

static const struct udp_tunnel_nic_info bnxt_udp_tunnels = { - .sync_table = bnxt_udp_tunnel_sync, + .set_port = bnxt_udp_tunnel_set_port, + .unset_port = bnxt_udp_tunnel_unset_port, .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP | UDP_TUNNEL_NIC_INFO_OPEN_ONLY, .tables = {