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Message-Id: <20230209104349.15830-3-ihuguet@redhat.com>
Date: Thu, 9 Feb 2023 11:43:47 +0100
From: Íñigo Huguet <ihuguet@...hat.com>
To: ecree.xilinx@...il.com, habetsm.xilinx@...il.com,
richardcochran@...il.com
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
pabeni@...hat.com, netdev@...r.kernel.org,
Íñigo Huguet <ihuguet@...hat.com>,
Yalin Li <yalli@...hat.com>
Subject: [PATCH net-next v3 2/4] sfc: allow insertion of filters for unicast PTP
Add a second list for unicast filters and generalize the
efx_ptp_insert/remove_filters functions to allow acting in any of the 2
lists.
No filters for unicast are inserted yet. That will be done in the next
patch.
The reason to use 2 different lists instead of a single one is that, in
next patches, we will want to check if unicast filters are already added
and if they're expired. We don't need that for multicast filters.
Reported-by: Yalin Li <yalli@...hat.com>
Signed-off-by: Íñigo Huguet <ihuguet@...hat.com>
---
drivers/net/ethernet/sfc/ptp.c | 58 ++++++++++++++++++++--------------
1 file changed, 35 insertions(+), 23 deletions(-)
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index b98c50874bb7..57e9355471b1 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -239,6 +239,7 @@ struct efx_ptp_rxfilter {
* @reset_required: A serious error has occurred and the PTP task needs to be
* reset (disable, enable).
* @rxfilters_mcast: Receive filters for multicast PTP packets
+ * @rxfilters_ucast: Receive filters for unicast PTP packets
* @config: Current timestamp configuration
* @enabled: PTP operation enabled
* @mode: Mode in which PTP operating (PTP version)
@@ -308,6 +309,7 @@ struct efx_ptp_data {
struct work_struct work;
bool reset_required;
struct list_head rxfilters_mcast;
+ struct list_head rxfilters_ucast;
struct hwtstamp_config config;
bool enabled;
unsigned int mode;
@@ -1296,12 +1298,12 @@ static inline void efx_ptp_process_rx(struct efx_nic *efx, struct sk_buff *skb)
local_bh_enable();
}
-static void efx_ptp_remove_multicast_filters(struct efx_nic *efx)
+static void efx_ptp_remove_filters(struct efx_nic *efx,
+ struct list_head *ptp_list)
{
- struct efx_ptp_data *ptp = efx->ptp_data;
struct efx_ptp_rxfilter *rxfilter, *tmp;
- list_for_each_entry_safe(rxfilter, tmp, &ptp->rxfilters_mcast, list) {
+ list_for_each_entry_safe(rxfilter, tmp, ptp_list, list) {
efx_filter_remove_id_safe(efx, EFX_FILTER_PRI_REQUIRED,
rxfilter->handle);
list_del(&rxfilter->list);
@@ -1320,9 +1322,9 @@ static void efx_ptp_init_filter(struct efx_nic *efx,
}
static int efx_ptp_insert_filter(struct efx_nic *efx,
+ struct list_head *ptp_list,
struct efx_filter_spec *spec)
{
- struct efx_ptp_data *ptp = efx->ptp_data;
struct efx_ptp_rxfilter *rxfilter;
int rc = efx_filter_insert_filter(efx, spec, true);
@@ -1334,32 +1336,34 @@ static int efx_ptp_insert_filter(struct efx_nic *efx,
return -ENOMEM;
rxfilter->handle = rc;
- list_add(&rxfilter->list, &ptp->rxfilters_mcast);
+ list_add(&rxfilter->list, ptp_list);
return 0;
}
-static int efx_ptp_insert_ipv4_filter(struct efx_nic *efx, u16 port)
+static int efx_ptp_insert_ipv4_filter(struct efx_nic *efx,
+ struct list_head *ptp_list,
+ __be32 addr, u16 port)
{
struct efx_filter_spec spec;
efx_ptp_init_filter(efx, &spec);
- efx_filter_set_ipv4_local(&spec, IPPROTO_UDP, htonl(PTP_ADDR_IPV4),
- htons(port));
- return efx_ptp_insert_filter(efx, &spec);
+ efx_filter_set_ipv4_local(&spec, IPPROTO_UDP, addr, htons(port));
+ return efx_ptp_insert_filter(efx, ptp_list, &spec);
}
-static int efx_ptp_insert_ipv6_filter(struct efx_nic *efx, u16 port)
+static int efx_ptp_insert_ipv6_filter(struct efx_nic *efx,
+ struct list_head *ptp_list,
+ struct in6_addr *addr, u16 port)
{
- const struct in6_addr addr = {{PTP_ADDR_IPV6}};
struct efx_filter_spec spec;
efx_ptp_init_filter(efx, &spec);
- efx_filter_set_ipv6_local(&spec, IPPROTO_UDP, &addr, htons(port));
- return efx_ptp_insert_filter(efx, &spec);
+ efx_filter_set_ipv6_local(&spec, IPPROTO_UDP, addr, htons(port));
+ return efx_ptp_insert_filter(efx, ptp_list, &spec);
}
-static int efx_ptp_insert_eth_filter(struct efx_nic *efx)
+static int efx_ptp_insert_eth_multicast_filter(struct efx_nic *efx)
{
const u8 addr[ETH_ALEN] = PTP_ADDR_ETHER;
struct efx_filter_spec spec;
@@ -1368,7 +1372,7 @@ static int efx_ptp_insert_eth_filter(struct efx_nic *efx)
efx_filter_set_eth_local(&spec, EFX_FILTER_VID_UNSPEC, addr);
spec.match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
spec.ether_type = htons(ETH_P_1588);
- return efx_ptp_insert_filter(efx, &spec);
+ return efx_ptp_insert_filter(efx, &efx->ptp_data->rxfilters_mcast, &spec);
}
static int efx_ptp_insert_multicast_filters(struct efx_nic *efx)
@@ -1382,11 +1386,13 @@ static int efx_ptp_insert_multicast_filters(struct efx_nic *efx)
/* Must filter on both event and general ports to ensure
* that there is no packet re-ordering.
*/
- rc = efx_ptp_insert_ipv4_filter(efx, PTP_EVENT_PORT);
+ rc = efx_ptp_insert_ipv4_filter(efx, &ptp->rxfilters_mcast,
+ htonl(PTP_ADDR_IPV4), PTP_EVENT_PORT);
if (rc < 0)
goto fail;
- rc = efx_ptp_insert_ipv4_filter(efx, PTP_GENERAL_PORT);
+ rc = efx_ptp_insert_ipv4_filter(efx, &ptp->rxfilters_mcast,
+ htonl(PTP_ADDR_IPV4), PTP_GENERAL_PORT);
if (rc < 0)
goto fail;
@@ -1394,15 +1400,19 @@ static int efx_ptp_insert_multicast_filters(struct efx_nic *efx)
* PTP over IPv6 and Ethernet
*/
if (efx_ptp_use_mac_tx_timestamps(efx)) {
- rc = efx_ptp_insert_ipv6_filter(efx, PTP_EVENT_PORT);
+ struct in6_addr ipv6_addr = {{PTP_ADDR_IPV6}};
+
+ rc = efx_ptp_insert_ipv6_filter(efx, &ptp->rxfilters_mcast,
+ &ipv6_addr, PTP_EVENT_PORT);
if (rc < 0)
goto fail;
- rc = efx_ptp_insert_ipv6_filter(efx, PTP_GENERAL_PORT);
+ rc = efx_ptp_insert_ipv6_filter(efx, &ptp->rxfilters_mcast,
+ &ipv6_addr, PTP_GENERAL_PORT);
if (rc < 0)
goto fail;
- rc = efx_ptp_insert_eth_filter(efx);
+ rc = efx_ptp_insert_eth_multicast_filter(efx);
if (rc < 0)
goto fail;
}
@@ -1410,7 +1420,7 @@ static int efx_ptp_insert_multicast_filters(struct efx_nic *efx)
return 0;
fail:
- efx_ptp_remove_multicast_filters(efx);
+ efx_ptp_remove_filters(efx, &ptp->rxfilters_mcast);
return rc;
}
@@ -1435,7 +1445,7 @@ static int efx_ptp_start(struct efx_nic *efx)
return 0;
fail:
- efx_ptp_remove_multicast_filters(efx);
+ efx_ptp_remove_filters(efx, &ptp->rxfilters_mcast);
return rc;
}
@@ -1451,7 +1461,8 @@ static int efx_ptp_stop(struct efx_nic *efx)
rc = efx_ptp_disable(efx);
- efx_ptp_remove_multicast_filters(efx);
+ efx_ptp_remove_filters(efx, &ptp->rxfilters_mcast);
+ efx_ptp_remove_filters(efx, &ptp->rxfilters_ucast);
/* Make sure RX packets are really delivered */
efx_ptp_deliver_rx_queue(&efx->ptp_data->rxq);
@@ -1583,6 +1594,7 @@ int efx_ptp_probe(struct efx_nic *efx, struct efx_channel *channel)
list_add(&ptp->rx_evts[pos].link, &ptp->evt_free_list);
INIT_LIST_HEAD(&ptp->rxfilters_mcast);
+ INIT_LIST_HEAD(&ptp->rxfilters_ucast);
/* Get the NIC PTP attributes and set up time conversions */
rc = efx_ptp_get_attributes(efx);
--
2.34.3
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