lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 31 Dec 2014 19:40:36 +0200 From: Vlad Zolotarov <vladz@...udius-systems.com> To: netdev@...r.kernel.org Cc: gleb@...udius-systems.com, avi@...udius-systems.com, jeffrey.t.kirsher@...el.com, Vlad Zolotarov <vladz@...udius-systems.com> Subject: [PATCH net-next v2 2/5] ixgbevf: Add a RETA query code - Added a new API version support. - Added the query implementation in the ixgbevf. Signed-off-by: Vlad Zolotarov <vladz@...udius-systems.com> --- New in v1 (compared to RFC): - Use "if-else" statement instead of a "switch-case" for a single option case (in ixgbevf_get_reta()). --- drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 4 +- drivers/net/ethernet/intel/ixgbevf/mbx.h | 6 ++ drivers/net/ethernet/intel/ixgbevf/vf.c | 73 +++++++++++++++++++++++ drivers/net/ethernet/intel/ixgbevf/vf.h | 1 + 4 files changed, 83 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index 62a0d8e..ba6ab61 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -1880,7 +1880,8 @@ static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter) static void ixgbevf_negotiate_api(struct ixgbevf_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; - int api[] = { ixgbe_mbox_api_11, + int api[] = { ixgbe_mbox_api_12, + ixgbe_mbox_api_11, ixgbe_mbox_api_10, ixgbe_mbox_api_unknown }; int err = 0, idx = 0; @@ -3525,6 +3526,7 @@ static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu) switch (adapter->hw.api_version) { case ixgbe_mbox_api_11: + case ixgbe_mbox_api_12: max_possible_frame = IXGBE_MAX_JUMBO_FRAME_SIZE; break; default: diff --git a/drivers/net/ethernet/intel/ixgbevf/mbx.h b/drivers/net/ethernet/intel/ixgbevf/mbx.h index 0bc3005..3e148a8 100644 --- a/drivers/net/ethernet/intel/ixgbevf/mbx.h +++ b/drivers/net/ethernet/intel/ixgbevf/mbx.h @@ -86,6 +86,7 @@ enum ixgbe_pfvf_api_rev { ixgbe_mbox_api_10, /* API version 1.0, linux/freebsd VF driver */ ixgbe_mbox_api_20, /* API version 2.0, solaris Phase1 VF driver */ ixgbe_mbox_api_11, /* API version 1.1, linux/freebsd VF driver */ + ixgbe_mbox_api_12, /* API version 1.2, linux/freebsd VF driver */ /* This value should always be last */ ixgbe_mbox_api_unknown, /* indicates that API version is not known */ }; @@ -104,6 +105,11 @@ enum ixgbe_pfvf_api_rev { /* mailbox API, version 1.1 VF requests */ #define IXGBE_VF_GET_QUEUE 0x09 /* get queue configuration */ +/* mailbox API, version 1.2 VF requests */ +#define IXGBE_VF_GET_RETA_0 0x0a /* get RETA[0..11] */ +#define IXGBE_VF_GET_RETA_1 0x0b /* get RETA[12..23] */ +#define IXGBE_VF_GET_RETA_2 0x0c /* get RETA[24..31] */ + /* GET_QUEUES return data indices within the mailbox */ #define IXGBE_VF_TX_QUEUES 1 /* number of Tx queues supported */ #define IXGBE_VF_RX_QUEUES 2 /* number of Rx queues supported */ diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c index cdb53be..8b98cdf 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.c +++ b/drivers/net/ethernet/intel/ixgbevf/vf.c @@ -258,6 +258,78 @@ static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr) return ret_val; } +static inline int _ixgbevf_get_reta(struct ixgbe_hw *hw, u32 *msgbuf, + u32 *reta, u32 op, int reta_offset_dw, + size_t dwords) +{ + int err; + + msgbuf[0] = op; + err = hw->mbx.ops.write_posted(hw, msgbuf, 1); + + if (err) + return err; + + err = hw->mbx.ops.read_posted(hw, msgbuf, 1 + dwords); + + if (err) + return err; + + msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; + + /* If we didn't get an ACK there must have been + * some sort of mailbox error so we should treat it + * as such. + */ + if (msgbuf[0] != (op | IXGBE_VT_MSGTYPE_ACK)) + return IXGBE_ERR_MBX; + + memcpy(reta + reta_offset_dw, msgbuf + 1, 4 * dwords); + + return 0; +} + +/** + * ixgbevf_get_reta - get the RSS redirection table (RETA) contents. + * @hw: pointer to the HW structure + * @reta: buffer to fill with RETA contents. + * + * The "reta" buffer should be big enough to contain 32 registers. + * + * Returns: 0 on success. + * if API doesn't support this operation - (-EPERM). + */ +int ixgbevf_get_reta(struct ixgbe_hw *hw, u32 *reta) +{ + int err; + u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; + + /* Return an error if API doesn't RETA querying. */ + if (hw->api_version != ixgbe_mbox_api_12) + return -EPERM; + + /* Fetch RETA from the PF. We do it in 3 steps due to mailbox size + * limitation - we can bring up to 15 dwords every time while RETA + * consists of 32 dwords. Therefore we'll bring 12, 12 and 8 dwords in + * each step correspondingly. + */ + + /* RETA[0..11] */ + err = _ixgbevf_get_reta(hw, msgbuf, reta, IXGBE_VF_GET_RETA_0, 0, 12); + if (err) + return err; + + /* RETA[12..23] */ + err = _ixgbevf_get_reta(hw, msgbuf, reta, IXGBE_VF_GET_RETA_1, 12, 12); + if (err) + return err; + + /* RETA[24..31] */ + err = _ixgbevf_get_reta(hw, msgbuf, reta, IXGBE_VF_GET_RETA_2, 24, 8); + + return err; +} + /** * ixgbevf_set_rar_vf - set device MAC address * @hw: pointer to hardware structure @@ -545,6 +617,7 @@ int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs, /* do nothing if API doesn't support ixgbevf_get_queues */ switch (hw->api_version) { case ixgbe_mbox_api_11: + case ixgbe_mbox_api_12: break; default: return 0; diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.h b/drivers/net/ethernet/intel/ixgbevf/vf.h index 5b17242..73c1b33 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.h +++ b/drivers/net/ethernet/intel/ixgbevf/vf.h @@ -208,5 +208,6 @@ void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size); int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api); int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs, unsigned int *default_tc); +int ixgbevf_get_reta(struct ixgbe_hw *hw, u32 *reta); #endif /* __IXGBE_VF_H__ */ -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists