LinuxKPI: add sign_extend32()

[bz]

Summary

Add sign_extend32() needed by rtw88.

MFC after: 10 days

[• hselasky]

sys/compat/linuxkpi/common/include/linux/bitops.h

416

should index be uint8_t aswell?

[emaste]

sys/compat/linuxkpi/common/include/linux/bitops.h

416

This matches the function signature from Linux

[bz]

sys/compat/linuxkpi/common/include/linux/bitops.h

416

@emaste "this" being "int" or "uint8_t"? The 64bit version above only had a "int" and I went by that,

sys/compat/linuxkpi/common/include/linux/bitops.h

  * SUCH DAMAGE.
  *
  * $FreeBSD$
  */
 
 #ifndef _NETINET_TCP_RACK_H_
 #define _NETINET_TCP_RACK_H_
 
-#define RACK_ACKED          0x0001/* The remote endpoint acked this */
-#define RACK_TO_REXT        0x0002/* A timeout occured on this sendmap entry */
-#define RACK_DEFERRED       0x0004/* We can't use this for RTT calc - not used */
-#define RACK_OVERMAX        0x0008/* We have more retran's then we can fit */
-#define RACK_SACK_PASSED    0x0010/* A sack was done above this block */
-#define RACK_WAS_SACKPASS   0x0020/* We retransmitted due to SACK pass */
-#define RACK_HAS_FIN        0x0040/* segment is sent with fin */
-#define RACK_TLP            0x0080/* segment sent as tail-loss-probe */
-#define RACK_RWND_COLLAPSED 0x0100/* The peer collapsed the rwnd on the segment */
-#define RACK_APP_LIMITED    0x0200/* We went app limited after this send */
-#define RACK_WAS_ACKED      0x0400/* a RTO undid the ack, but it already had a rtt calc done */
-#define RACK_HAS_SYN        0x0800/* SYN is on this guy */
-#define RACK_SENT_W_DSACK   0x1000/* Sent with a dsack */
-#define RACK_SENT_SP        0x2000/* sent in slow path */
-#define RACK_SENT_FP        0x4000/* sent in fast path */
-#define RACK_HAD_PUSH       0x8000/* Push was sent on original send */
+#define RACK_ACKED          0x000001/* The remote endpoint acked this */
+#define RACK_TO_REXT        0x000002/* A timeout occured on this sendmap entry */
+#define RACK_DEFERRED       0x000004/* We can't use this for RTT calc - not used */
+#define RACK_OVERMAX        0x000008/* We have more retran's then we can fit */
+#define RACK_SACK_PASSED    0x000010/* A sack was done above this block */
+#define RACK_WAS_SACKPASS   0x000020/* We retransmitted due to SACK pass */
+#define RACK_HAS_FIN        0x000040/* segment is sent with fin */
+#define RACK_TLP            0x000080/* segment sent as tail-loss-probe */
+#define RACK_RWND_COLLAPSED 0x000100/* The peer collapsed the rwnd on the segment */
+#define RACK_APP_LIMITED    0x000200/* We went app limited after this send */
+#define RACK_WAS_ACKED      0x000400/* a RTO undid the ack, but it already had a rtt calc done */
+#define RACK_HAS_SYN        0x000800/* SYN is on this guy */
+#define RACK_SENT_W_DSACK   0x001000/* Sent with a dsack */
+#define RACK_SENT_SP        0x002000/* sent in slow path */
+#define RACK_SENT_FP        0x004000/* sent in fast path */
+#define RACK_HAD_PUSH       0x008000/* Push was sent on original send */
+#define RACK_MUST_RXT       0x010000/* We must retransmit this rsm (non-sack/mtu chg)*/
 #define RACK_NUM_OF_RETRANS 3
 
 #define RACK_INITIAL_RTO 1000000 /* 1 second in microseconds */
 
 #define RACK_REQ_AVG 3  /* Must be less than 256 */
 
 struct rack_sendmap {
         TAILQ_ENTRY(rack_sendmap) r_tnext;        /* Time of transmit based next */
         uint32_t r_start;       /* Sequence number of the segment */
         uint32_t r_end;         /* End seq, this is 1 beyond actually */
         uint32_t r_rtr_bytes;   /* How many bytes have been retransmitted */
-        uint16_t r_rtr_cnt;        /* Retran count, index this -1 to get time
-                                 * sent */
-        uint16_t r_flags;       /* Flags as defined above */
+        uint32_t r_flags : 24,        /* Flags as defined above */
+                 r_rtr_cnt : 8;        /* Retran count, index this -1 to get time */
         struct mbuf *m;
         uint32_t soff;
         uint32_t orig_m_len;
         uint32_t r_nseq_appl;   /* If this one is app limited, this is the nxt seq limited */
         uint8_t r_dupack;       /* Dup ack count */
         uint8_t r_in_tmap;      /* Flag to see if its in the r_tnext array */
         uint8_t r_limit_type;   /* is this entry counted against a limit? */
         uint8_t r_just_ret : 1, /* After sending, the next pkt was just returned, i.e. limited  */