diff options
Diffstat (limited to 'drivers/net/wireless/ath/wil6210/txrx_edma.h')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/txrx_edma.h | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/wil6210/txrx_edma.h b/drivers/net/wireless/ath/wil6210/txrx_edma.h index 343516a03a1e..bb4ff28b73e5 100644 --- a/drivers/net/wireless/ath/wil6210/txrx_edma.h +++ b/drivers/net/wireless/ath/wil6210/txrx_edma.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012-2016,2018, The Linux Foundation. All rights reserved. + * Copyright (c) 2012-2016,2018-2019, The Linux Foundation. All rights reserved. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -427,6 +427,12 @@ static inline int wil_rx_status_get_eop(void *msg) /* EoP = End of Packet */ 30, 30); } +static inline void wil_rx_status_reset_buff_id(struct wil_status_ring *s) +{ + ((struct wil_rx_status_compressed *) + (s->va + (s->elem_size * s->swhead)))->buff_id = 0; +} + static inline __le16 wil_rx_status_get_buff_id(void *msg) { return ((struct wil_rx_status_compressed *)msg)->buff_id; @@ -511,6 +517,45 @@ static inline int wil_rx_status_get_l4_rx_status(void *msg) 5, 6); } +/* L4 L3 Expected result + * 0 0 Ok. No L3 and no L4 known protocols found. + * Treated as L2 packet. (no offloads on this packet) + * 0 1 Ok. It means that L3 was found, and checksum check passed. + * No known L4 protocol was found. + * 0 2 It means that L3 protocol was found, and checksum check failed. + * No L4 known protocol was found. + * 1 any Ok. It means that L4 was found, and checksum check passed. + * 3 0 Not a possible scenario. + * 3 1 Recalculate. It means that L3 protocol was found, and checksum + * passed. But L4 checksum failed. Need to see if really failed, + * or due to fragmentation. + * 3 2 Both L3 and L4 checksum check failed. + */ +static inline int wil_rx_status_get_checksum(void *msg, + struct wil_net_stats *stats) +{ + int l3_rx_status = wil_rx_status_get_l3_rx_status(msg); + int l4_rx_status = wil_rx_status_get_l4_rx_status(msg); + + if (l4_rx_status == 1) + return CHECKSUM_UNNECESSARY; + + if (l4_rx_status == 0 && l3_rx_status == 1) + return CHECKSUM_UNNECESSARY; + + if (l3_rx_status == 0 && l4_rx_status == 0) + /* L2 packet */ + return CHECKSUM_NONE; + + /* If HW reports bad checksum, let IP stack re-check it + * For example, HW doesn't understand Microsoft IP stack that + * mis-calculates TCP checksum - if it should be 0x0, + * it writes 0xffff in violation of RFC 1624 + */ + stats->rx_csum_err++; + return CHECKSUM_NONE; +} + static inline int wil_rx_status_get_security(void *msg) { return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0, |