diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/net/qeth_core.h | 1 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 104 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_l2_main.c | 7 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_l3_main.c | 26 |
4 files changed, 65 insertions, 73 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index 0b4250d3a25d..d79892782a2b 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -869,6 +869,7 @@ void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *); void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...); int qeth_core_ethtool_get_settings(struct net_device *, struct ethtool_cmd *); int qeth_set_access_ctrl_online(struct qeth_card *card); +int qeth_hdr_chk_and_bounce(struct sk_buff *, int); /* exports for OSN */ int qeth_osn_assist(struct net_device *, void *, int); diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 3cdd2705b75a..656a6e78a2ee 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -57,48 +57,6 @@ static void qeth_free_buffer_pool(struct qeth_card *); static int qeth_qdio_establish(struct qeth_card *); -static inline void __qeth_fill_buffer_frag(struct sk_buff *skb, - struct qdio_buffer *buffer, int is_tso, - int *next_element_to_fill) -{ - struct skb_frag_struct *frag; - int fragno; - unsigned long addr; - int element, cnt, dlen; - - fragno = skb_shinfo(skb)->nr_frags; - element = *next_element_to_fill; - dlen = 0; - - if (is_tso) - buffer->element[element].flags = - SBAL_FLAGS_MIDDLE_FRAG; - else - buffer->element[element].flags = - SBAL_FLAGS_FIRST_FRAG; - dlen = skb->len - skb->data_len; - if (dlen) { - buffer->element[element].addr = skb->data; - buffer->element[element].length = dlen; - element++; - } - for (cnt = 0; cnt < fragno; cnt++) { - frag = &skb_shinfo(skb)->frags[cnt]; - addr = (page_to_pfn(frag->page) << PAGE_SHIFT) + - frag->page_offset; - buffer->element[element].addr = (char *)addr; - buffer->element[element].length = frag->size; - if (cnt < (fragno - 1)) - buffer->element[element].flags = - SBAL_FLAGS_MIDDLE_FRAG; - else - buffer->element[element].flags = - SBAL_FLAGS_LAST_FRAG; - element++; - } - *next_element_to_fill = element; -} - static inline const char *qeth_get_cardname(struct qeth_card *card) { if (card->info.guestlan) { @@ -3020,13 +2978,11 @@ EXPORT_SYMBOL_GPL(qeth_get_priority_queue); int qeth_get_elements_no(struct qeth_card *card, void *hdr, struct sk_buff *skb, int elems) { - int elements_needed = 0; + int dlen = skb->len - skb->data_len; + int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) - + PFN_DOWN((unsigned long)skb->data); - if (skb_shinfo(skb)->nr_frags > 0) - elements_needed = (skb_shinfo(skb)->nr_frags + 1); - if (elements_needed == 0) - elements_needed = 1 + (((((unsigned long) skb->data) % - PAGE_SIZE) + skb->len) >> PAGE_SHIFT); + elements_needed += skb_shinfo(skb)->nr_frags; if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { QETH_DBF_MESSAGE(2, "Invalid size of IP packet " "(Number=%d / Length=%d). Discarded.\n", @@ -3037,15 +2993,35 @@ int qeth_get_elements_no(struct qeth_card *card, void *hdr, } EXPORT_SYMBOL_GPL(qeth_get_elements_no); +int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len) +{ + int hroom, inpage, rest; + + if (((unsigned long)skb->data & PAGE_MASK) != + (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { + hroom = skb_headroom(skb); + inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); + rest = len - inpage; + if (rest > hroom) + return 1; + memmove(skb->data - rest, skb->data, skb->len - skb->data_len); + skb->data -= rest; + QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); + } + return 0; +} +EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); + static inline void __qeth_fill_buffer(struct sk_buff *skb, struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill, int offset) { - int length = skb->len; + int length = skb->len - skb->data_len; int length_here; int element; char *data; - int first_lap ; + int first_lap, cnt; + struct skb_frag_struct *frag; element = *next_element_to_fill; data = skb->data; @@ -3068,10 +3044,14 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb, length -= length_here; if (!length) { if (first_lap) - buffer->element[element].flags = 0; + if (skb_shinfo(skb)->nr_frags) + buffer->element[element].flags = + SBAL_FLAGS_FIRST_FRAG; + else + buffer->element[element].flags = 0; else buffer->element[element].flags = - SBAL_FLAGS_LAST_FRAG; + SBAL_FLAGS_MIDDLE_FRAG; } else { if (first_lap) buffer->element[element].flags = @@ -3084,6 +3064,18 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb, element++; first_lap = 0; } + + for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { + frag = &skb_shinfo(skb)->frags[cnt]; + buffer->element[element].addr = (char *)page_to_phys(frag->page) + + frag->page_offset; + buffer->element[element].length = frag->size; + buffer->element[element].flags = SBAL_FLAGS_MIDDLE_FRAG; + element++; + } + + if (buffer->element[element - 1].flags) + buffer->element[element - 1].flags = SBAL_FLAGS_LAST_FRAG; *next_element_to_fill = element; } @@ -3124,12 +3116,8 @@ static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue, buf->next_element_to_fill++; } - if (skb_shinfo(skb)->nr_frags == 0) - __qeth_fill_buffer(skb, buffer, large_send, - (int *)&buf->next_element_to_fill, offset); - else - __qeth_fill_buffer_frag(skb, buffer, large_send, - (int *)&buf->next_element_to_fill); + __qeth_fill_buffer(skb, buffer, large_send, + (int *)&buf->next_element_to_fill, offset); if (!queue->do_pack) { QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index e7942ccab987..32d07c2dcc67 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -712,10 +712,13 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) goto tx_drop; } - if (card->info.type != QETH_CARD_TYPE_IQD) + if (card->info.type != QETH_CARD_TYPE_IQD) { + if (qeth_hdr_chk_and_bounce(new_skb, + sizeof(struct qeth_hdr_layer2))) + goto tx_drop; rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements); - else + } else rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, elements, data_offset, hd_len); if (!rc) { diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index b5733e405ed9..61d348e51920 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -2904,19 +2904,11 @@ static inline int qeth_l3_tso_elements(struct sk_buff *skb) unsigned long tcpd = (unsigned long)tcp_hdr(skb) + tcp_hdr(skb)->doff * 4; int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data); - int elements = PFN_UP(tcpd + tcpd_len) - PFN_DOWN(tcpd); + int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd); elements += skb_shinfo(skb)->nr_frags; return elements; } -static inline int qeth_l3_tso_check(struct sk_buff *skb) -{ - int len = ((unsigned long)tcp_hdr(skb) + tcp_hdr(skb)->doff * 4) - - (unsigned long)skb->data; - return (((unsigned long)skb->data & PAGE_MASK) != - (((unsigned long)skb->data + len) & PAGE_MASK)); -} - static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { int rc; @@ -3016,8 +3008,6 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) (cast_type == RTN_UNSPEC)) { hdr = (struct qeth_hdr *)skb_push(new_skb, sizeof(struct qeth_hdr_tso)); - if (qeth_l3_tso_check(new_skb)) - QETH_DBF_MESSAGE(2, "tso skb misaligned\n"); memset(hdr, 0, sizeof(struct qeth_hdr_tso)); qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type); qeth_tso_fill_header(card, hdr, new_skb); @@ -3048,10 +3038,20 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) elements_needed += elems; nr_frags = skb_shinfo(new_skb)->nr_frags; - if (card->info.type != QETH_CARD_TYPE_IQD) + if (card->info.type != QETH_CARD_TYPE_IQD) { + int len; + if (large_send == QETH_LARGE_SEND_TSO) + len = ((unsigned long)tcp_hdr(new_skb) + + tcp_hdr(new_skb)->doff * 4) - + (unsigned long)new_skb->data; + else + len = sizeof(struct qeth_hdr_layer3); + + if (qeth_hdr_chk_and_bounce(new_skb, len)) + goto tx_drop; rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements_needed); - else + } else rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, elements_needed, data_offset, 0); |