> -----Original Message-----
> From: dev <dev-boun...@dpdk.org> On Behalf Of Dekel Peled
> Sent: Sunday, March 17, 2019 8:23
> To: Yongseok Koh <ys...@mellanox.com>; Shahaf Shuler
> <shah...@mellanox.com>
> Cc: dev@dpdk.org; Ori Kam <or...@mellanox.com>; Dekel Peled
> <dek...@mellanox.com>
> Subject: [dpdk-dev] [PATCH v5] net/mlx5: support new representor naming
> format
>
> Kernel update [1] introduce new format of representors names.
> This patch implements RFC [2], updating MLX5 PMD to support the new
> format, while maintaining support of the existing format.
>
> [1]
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub
> .com%2Ftorvalds%2Flinux%2Fcommit%2Fc12ecc2&data=02%7C01%7Cvi
> acheslavo%40mellanox.com%7C17dec02b64014892fa4a08d6aaa12e04%7Ca
> 652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7C636884006586825444&a
> mp;sdata=YFOOhRcJ2qb19nRUA9aRUqHP8HChHLX7VP1tlWZ5OLk%3D&
> reserved=0
> [2]
> https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmails.d
> pdk.org%2Farchives%2Fdev%2F2019-
> March%2F125676.html&data=02%7C01%7Cviacheslavo%40mellanox.co
> m%7C17dec02b64014892fa4a08d6aaa12e04%7Ca652971c7d2e4d9ba6a4d14
> 9256f461b%7C0%7C0%7C636884006586825444&sdata=EWWcj5GANyC
> 5nKdNaCuqUeRZmXIEgH4HHRbc52h5cto%3D&reserved=0
>
> Signed-off-by: Dekel Peled <dek...@mellanox.com>
>
Acked-by: Viacheslav Ovsiienko <viachesl...@mellanox.com>
> ---
> v5: Add flag to indicate if rep. port name is in new format.
> v4: Remove redundant clear of errno.
> v3: Add utility function with common logic, call it from sysfs and nl.
> v2: Use public link to kernel patch, add link to RFC.
> ---
> ---
> drivers/net/mlx5/mlx5.h | 3 +++
> drivers/net/mlx5/mlx5_ethdev.c | 54
> ++++++++++++++++++++++++++++++++++++++----
> drivers/net/mlx5/mlx5_nl.c | 11 ++++-----
> 3 files changed, 57 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index
> 5384453..88ffb19 100644
> --- a/drivers/net/mlx5/mlx5.h
> +++ b/drivers/net/mlx5/mlx5.h
> @@ -60,6 +60,7 @@ enum {
> struct mlx5_switch_info {
> uint32_t master:1; /**< Master device. */
> uint32_t representor:1; /**< Representor device. */
> + uint32_t port_name_new:1; /**< Rep. port name is in new format.
> */
> int32_t port_name; /**< Representor port name. */
> uint64_t switch_id; /**< Switch identifier. */ }; @@ -300,6 +301,8
> @@ unsigned int mlx5_dev_to_port_id(const struct rte_device *dev,
> unsigned int port_list_n);
> int mlx5_sysfs_switch_info(unsigned int ifindex,
> struct mlx5_switch_info *info);
> +bool mlx5_translate_port_name(const char *port_name_in,
> + struct mlx5_switch_info *port_info_out);
>
> /* mlx5_mac.c */
>
> diff --git a/drivers/net/mlx5/mlx5_ethdev.c
> b/drivers/net/mlx5/mlx5_ethdev.c index 795c9c7..428a465 100644
> --- a/drivers/net/mlx5/mlx5_ethdev.c
> +++ b/drivers/net/mlx5/mlx5_ethdev.c
> @@ -1353,9 +1353,16 @@ int mlx5_fw_version_get(struct rte_eth_dev *dev,
> char *fw_ver, size_t fw_size) mlx5_sysfs_switch_info(unsigned int ifindex,
> struct mlx5_switch_info *info) {
> char ifname[IF_NAMESIZE];
> + char port_name[IF_NAMESIZE];
> FILE *file;
> DIR *dir;
> - struct mlx5_switch_info data = { .master = 0, };
> + struct mlx5_switch_info data = {
> + .master = 0,
> + .representor = 0,
> + .port_name_new = 0,
> + .port_name = 0,
> + .switch_id = 0,
> + };
> bool port_name_set = false;
> bool port_switch_id_set = false;
> bool device_dir = false;
> @@ -1375,10 +1382,9 @@ int mlx5_fw_version_get(struct rte_eth_dev *dev,
> char *fw_ver, size_t fw_size)
>
> file = fopen(phys_port_name, "rb");
> if (file != NULL) {
> - port_name_set =
> - fscanf(file, "%d%c", &data.port_name, &c) == 2 &&
> - c == '\n';
> + fscanf(file, "%s", port_name);
> fclose(file);
> + port_name_set = mlx5_translate_port_name(port_name,
> &data);
> }
> file = fopen(phys_switch_id, "rb");
> if (file == NULL) {
> @@ -1399,3 +1405,43 @@ int mlx5_fw_version_get(struct rte_eth_dev *dev,
> char *fw_ver, size_t fw_size)
> *info = data;
> return 0;
> }
> +
> +/**
> + * Extract port name, as a number, from sysfs or netlink information.
> + *
> + * @param[in] port_name_in
> + * String representing the port name.
> + * @param[out] port_info_out
> + * Port information, including port name as a number.
> + *
> + * @return
> + * true on success, false otherwise.
> + */
> +bool
> +mlx5_translate_port_name(const char *port_name_in,
> + struct mlx5_switch_info *port_info_out) {
> + char pf_c1, pf_c2, vf_c1, vf_c2;
> + char *end;
> + int32_t pf_num;
> + bool port_name_set = false;
> +
> + /*
> + * Check for port-name as a string of the form pf0vf0
> + * (support kernel ver >= 5.0)
> + */
> + port_name_set = (sscanf(port_name_in, "%c%c%d%c%c%d",
> &pf_c1, &pf_c2,
> + &pf_num, &vf_c1, &vf_c2,
> + &port_info_out->port_name) == 6);
> + if (port_name_set) {
> + port_info_out->port_name_new = 1;
> + } else {
> + /* Check for port-name as a number (support kernel ver <
> 5.0 */
> + errno = 0;
> + port_info_out->port_name = strtol(port_name_in, &end, 0);
> + if (!errno &&
> + (size_t)(end - port_name_in) == strlen(port_name_in))
> + port_name_set = true;
> + }
> + return port_name_set;
> +}
> diff --git a/drivers/net/mlx5/mlx5_nl.c b/drivers/net/mlx5/mlx5_nl.c index
> 0bf6845..cb34de3 100644
> --- a/drivers/net/mlx5/mlx5_nl.c
> +++ b/drivers/net/mlx5/mlx5_nl.c
> @@ -836,6 +836,7 @@ struct mlx5_nl_ifindex_data {
> struct mlx5_switch_info info = {
> .master = 0,
> .representor = 0,
> + .port_name_new = 0,
> .port_name = 0,
> .switch_id = 0,
> };
> @@ -849,7 +850,6 @@ struct mlx5_nl_ifindex_data {
> while (off < nh->nlmsg_len) {
> struct rtattr *ra = (void *)((uintptr_t)nh + off);
> void *payload = RTA_DATA(ra);
> - char *end;
> unsigned int i;
>
> if (ra->rta_len > nh->nlmsg_len - off) @@ -859,12 +859,9 @@
> struct mlx5_nl_ifindex_data {
> num_vf_set = true;
> break;
> case IFLA_PHYS_PORT_NAME:
> - errno = 0;
> - info.port_name = strtol(payload, &end, 0);
> - if (errno ||
> - (size_t)(end - (char *)payload) != strlen(payload))
> - goto error;
> - port_name_set = true;
> + port_name_set =
> + mlx5_translate_port_name((char *)payload,
> + &info);
> break;
> case IFLA_PHYS_SWITCH_ID:
> info.switch_id = 0;
> --
> 1.8.3.1
