dev/pci/if_iwm.c

2243 	/* Enable RX DMA, 4KB buffer size. */
5033  * To be used only in order to compare reorder buffer head with NSSN.
5103     struct iwm_reorder_buffer *buffer, uint32_t reorder_data, uint32_t gp2)
5107 	if (gp2 != buffer->consec_oldsn_ampdu_gp2) {
5114 		if (!buffer->consec_oldsn_prev_drop)
5115 			buffer->consec_oldsn_drops = 0;
5118 		buffer->consec_oldsn_ampdu_gp2 = gp2;
5119 	} else if (buffer->consec_oldsn_prev_drop) {
5134 	buffer->consec_oldsn_prev_drop = 1;
5135 	buffer->consec_oldsn_drops++;
5138 	if (buffer->consec_oldsn_drops == IWM_AMPDU_CONSEC_DROPS_DELBA) {
5141 		buffer->consec_oldsn_prev_drop = 0;
5142 		buffer->consec_oldsn_drops = 0;
5164 	struct iwm_reorder_buffer *buffer;
5220 	buffer = &rxba->reorder_buf;
5223 	if (!buffer->valid) {
5226 		buffer->valid = 1;
5232 		iwm_release_frames(sc, ni, rxba, buffer, nssn, ml);
5239 	 * the reorder buffer, in which case we just release up to it and the
5243 	if (!iwm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
5244 	    buffer->buf_size) ||
5245 	    !SEQ_LT(sn, buffer->head_sn + buffer->buf_size)) {
5248 		iwm_release_frames(sc, ni, rxba, buffer, min_sn, ml);
5251 	if (iwm_oldsn_workaround(sc, ni, tid, buffer, reorder_data,
5260 	if (SEQ_LT(sn, buffer->head_sn)) {
5266 	if (!buffer->num_stored && SEQ_LT(sn, nssn)) {
5267 		if (iwm_is_sn_less(buffer->head_sn, nssn, buffer->buf_size) &&
5269 			buffer->head_sn = nssn;
5282 	if (!buffer->num_stored && sn == buffer->head_sn) {
5284 			buffer->head_sn = (buffer->head_sn + 1) & 0xfff;
5289 	index = sn % buffer->buf_size;
5294 	 * If we have frames in that position in the buffer and the last frame
5303 		} else if (sn != buffer->last_amsdu ||
5304 		    buffer->last_sub_index >= subframe_idx) {
5317 	/* put in reorder buffer */
5319 	buffer->num_stored++;
5323 		buffer->last_amsdu = sn;
5324 		buffer->last_sub_index = subframe_idx;
5330 	 * cause the reorder buffer to advance before all the sub-frames arrive.
5331 	 * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
5333 	 * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
5339 		iwm_release_frames(sc, ni, rxba, buffer, nssn, ml);
6308 	/* If this command waits for a response, allocate response buffer. */
6444 			/* Response buffer will be freed in iwm_free_resp(). */
11035 				/* No need to copy last frame in buffer. */