TCP_MAX_SACK
struct sackblk sack, sack_blocks[TCP_MAX_SACK + 1], *sblkp;
struct sackblk sack, sack_blocks[TCP_MAX_SACK + 1];
struct sackblk sack, sack_blocks[TCP_MAX_SACK + 1];
struct sackblk blkboard[TCP_MAX_SACK];
if (numblks > TCP_MAX_SACK) {
struct sackblk blks[TCP_MAX_SACK];
if (numblks == TCP_MAX_SACK) {