diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c index 72baedefa0f1..1a44291318ee 100644 --- a/drivers/staging/octeon/ethernet-rx.c +++ b/drivers/staging/octeon/ethernet-rx.c @@ -149,6 +149,46 @@ static inline int cvm_oct_check_rcv_error(cvmx_wqe_t *work) return 0; } +static void copy_segments_to_skb(cvmx_wqe_t *work, struct sk_buff *skb) +{ + int segments = work->word2.s.bufs; + union cvmx_buf_ptr segment_ptr = work->packet_ptr; + int len = work->word1.len; + int segment_size; + + while (segments--) { + union cvmx_buf_ptr next_ptr; + + next_ptr = *(union cvmx_buf_ptr *) + cvmx_phys_to_ptr(segment_ptr.s.addr - 8); + + /* + * Octeon Errata PKI-100: The segment size is wrong. + * + * Until it is fixed, calculate the segment size based on + * the packet pool buffer size. + * When it is fixed, the following line should be replaced + * with this one: + * int segment_size = segment_ptr.s.size; + */ + segment_size = + CVMX_FPA_PACKET_POOL_SIZE - + (segment_ptr.s.addr - + (((segment_ptr.s.addr >> 7) - + segment_ptr.s.back) << 7)); + + /* Don't copy more than what is left in the packet */ + if (segment_size > len) + segment_size = len; + + /* Copy the data into the packet */ + skb_put_data(skb, cvmx_phys_to_ptr(segment_ptr.s.addr), + segment_size); + len -= segment_size; + segment_ptr = next_ptr; + } +} + static int cvm_oct_poll(struct oct_rx_group *rx_group, int budget) { const int coreid = cvmx_get_core_num(); @@ -290,44 +330,7 @@ static int cvm_oct_poll(struct oct_rx_group *rx_group, int budget) skb_put_data(skb, ptr, work->word1.len); /* No packet buffers to free */ } else { - int segments = work->word2.s.bufs; - union cvmx_buf_ptr segment_ptr = - work->packet_ptr; - int len = work->word1.len; - - while (segments--) { - union cvmx_buf_ptr next_ptr = - *(union cvmx_buf_ptr *) - cvmx_phys_to_ptr( - segment_ptr.s.addr - 8); - - /* - * Octeon Errata PKI-100: The segment size is - * wrong. Until it is fixed, calculate the - * segment size based on the packet pool - * buffer size. When it is fixed, the - * following line should be replaced with this - * one: int segment_size = - * segment_ptr.s.size; - */ - int segment_size = - CVMX_FPA_PACKET_POOL_SIZE - - (segment_ptr.s.addr - - (((segment_ptr.s.addr >> 7) - - segment_ptr.s.back) << 7)); - /* - * Don't copy more than what - * is left in the packet. - */ - if (segment_size > len) - segment_size = len; - /* Copy the data into the packet */ - skb_put_data(skb, - cvmx_phys_to_ptr(segment_ptr.s.addr), - segment_size); - len -= segment_size; - segment_ptr = next_ptr; - } + copy_segments_to_skb(work, skb); } packet_not_copied = 0; }